title: iOS 14 widget extension crashes after fetching timeline
body: <p>I'm implementing a widget extension which crashes randomly when the completion handles gets called. An exception is thrown
  <code>&quot;-[NSConcreteFileHandle fileDescriptor]: Invalid argument&quot;</code></p>
  <p>This is my implementation:</p>
  <pre><code>func getTimeline(in context: Context, completion: @escaping (Timeline&lt;Entry&gt;) -&gt; ()) {
  
      let countArticles = self.countArticles(dependingOn: context.family)
  
      self.backendService.fetchArticles(countArticles: countArticles) { [weak self] (result) in
  
          let secondsUntilNextRefresh = TimeInterval(10 * 60)
          let dateToInvokeNextRefresh = Date().addingTimeInterval(secondsUntilNextRefresh)
          let timelineEntries = TimelineMapper().mapArticlesResultToTimelineEntry(result)
          let timeline = Timeline(entries: timelineEntries,
                                  policy: .after(dateToInvokeNextRefresh))
  
          DispatchQueue.main.async {
  
              completion(timeline)
          }
      }
  }
  </code></pre>
  <p>and stack trace</p>
  <pre><code>#0  0x00007fff20177f48 in objc_exception_throw ()
  #1  0x00007fff2078b731 in _NSFileHandleRaiseOperationExceptionWhileReading ()
  #2  0x00007fff2078adb1 in _NSFileHandleRaiseOperationException ()
  #3  0x00007fff2078ada6 in -[NSConcreteFileHandle fileDescriptor] ()
  #4  0x00007fff55c32ad4 in FileArchiveWriter.appendBytes(_:size:) ()
  #5  0x00007fff55c32d06 in FileArchiveWriter.append&lt;A&gt;(_:) ()
  #6  0x00007fff55c3222f in ArchiveWriter.addAttachment(data:) ()
  #7  0x00007fff55c34086 in Encoder.encodeAttachedValue&lt;A&gt;(key:data:) ()
  #8  0x00007fff55ff0a96 in CodableCGImage.encode(to:) ()
  #9  0x00007fff55ff0eed in protocol witness for Encodable.encode(to:) in conformance CodableCGImage ()
  #10 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #11 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #12 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #13 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #14 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #15 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #16 0x00007fff55a81c02 in GraphicsImage.encode(to:) ()
  #17 0x00007fff55a826e9 in protocol witness for Encodable.encode(to:) in conformance GraphicsImage ()
  #18 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #19 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #20 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #21 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #22 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #23 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #24 0x00007fff560b0669 in DisplayList.Content.Value.encode(to:) ()
  #25 0x00007fff56005d6d in protocol witness for Encodable.encode(to:) in conformance DisplayList.Content.Value ()
  #26 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #27 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #28 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #29 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #30 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #31 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #32 0x00007fff56006159 in DisplayList.Content.encode(to:) ()
  #33 0x00007fff56006341 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Content ()
  #34 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #35 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #36 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #37 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #38 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #39 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #40 0x00007fff560af5d8 in DisplayList.Item.Value.encode(to:) ()
  #41 0x00007fff56005ce9 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item.Value ()
  #42 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #43 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #44 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #45 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #46 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #47 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #48 0x00007fff560afaef in DisplayList.Item.encode(to:) ()
  #49 0x00007fff56005d39 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item ()
  #50 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #51 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #52 0x00007fff536a39b7 in _PlistUnkeyedEncodingContainer.encode&lt;A&gt;(_:) ()
  #53 0x00007fff536a4b49 in protocol witness for UnkeyedEncodingContainer.encode&lt;A&gt;(_:) in conformance _PlistUnkeyedEncodingContainer ()
  #54 0x00007fff2f0ecf88 in Array&lt;A&gt;.encode(to:) ()
  #55 0x00007fff2f0ed0e8 in protocol witness for Encodable.encode(to:) in conformance &lt;A&gt; [A] ()
  #56 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #57 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #58 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #59 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #60 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #61 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #62 0x00007fff560af15e in DisplayList.encode(to:) ()
  #63 0x00007fff56005cc1 in protocol witness for Encodable.encode(to:) in conformance DisplayList ()
  #64 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #65 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #66 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #67 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #68 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #69 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #70 0x00007fff560af5d8 in DisplayList.Item.Value.encode(to:) ()
  #71 0x00007fff56005ce9 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item.Value ()
  #72 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #73 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #74 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #75 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #76 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #77 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #78 0x00007fff560afaef in DisplayList.Item.encode(to:) ()
  #79 0x00007fff56005d39 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item ()
  #80 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #81 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #82 0x00007fff536a39b7 in _PlistUnkeyedEncodingContainer.encode&lt;A&gt;(_:) ()
  #83 0x00007fff536a4b49 in protocol witness for UnkeyedEncodingContainer.encode&lt;A&gt;(_:) in conformance _PlistUnkeyedEncodingContainer ()
  #84 0x00007fff2f0ecf88 in Array&lt;A&gt;.encode(to:) ()
  #85 0x00007fff2f0ed0e8 in protocol witness for Encodable.encode(to:) in conformance &lt;A&gt; [A] ()
  #86 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #87 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #88 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #89 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #90 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #91 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #92 0x00007fff560af15e in DisplayList.encode(to:) ()
  #93 0x00007fff56005cc1 in protocol witness for Encodable.encode(to:) in conformance DisplayList ()
  #94 0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #95 0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #96 0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #97 0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #98 0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #99 0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #100    0x00007fff560af5d8 in DisplayList.Item.Value.encode(to:) ()
  #101    0x00007fff56005ce9 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item.Value ()
  #102    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #103    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #104    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #105    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #106    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #107    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #108    0x00007fff560afaef in DisplayList.Item.encode(to:) ()
  #109    0x00007fff56005d39 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item ()
  #110    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #111    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #112    0x00007fff536a39b7 in _PlistUnkeyedEncodingContainer.encode&lt;A&gt;(_:) ()
  #113    0x00007fff536a4b49 in protocol witness for UnkeyedEncodingContainer.encode&lt;A&gt;(_:) in conformance _PlistUnkeyedEncodingContainer ()
  #114    0x00007fff2f0ecf88 in Array&lt;A&gt;.encode(to:) ()
  #115    0x00007fff2f0ed0e8 in protocol witness for Encodable.encode(to:) in conformance &lt;A&gt; [A] ()
  #116    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #117    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #118    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #119    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #120    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #121    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #122    0x00007fff560af15e in DisplayList.encode(to:) ()
  #123    0x00007fff56005cc1 in protocol witness for Encodable.encode(to:) in conformance DisplayList ()
  #124    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #125    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #126    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #127    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #128    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #129    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #130    0x00007fff560af5d8 in DisplayList.Item.Value.encode(to:) ()
  #131    0x00007fff56005ce9 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item.Value ()
  #132    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #133    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #134    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #135    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #136    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #137    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #138    0x00007fff560afaef in DisplayList.Item.encode(to:) ()
  #139    0x00007fff56005d39 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item ()
  #140    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #141    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #142    0x00007fff536a39b7 in _PlistUnkeyedEncodingContainer.encode&lt;A&gt;(_:) ()
  #143    0x00007fff536a4b49 in protocol witness for UnkeyedEncodingContainer.encode&lt;A&gt;(_:) in conformance _PlistUnkeyedEncodingContainer ()
  #144    0x00007fff2f0ecf88 in Array&lt;A&gt;.encode(to:) ()
  #145    0x00007fff2f0ed0e8 in protocol witness for Encodable.encode(to:) in conformance &lt;A&gt; [A] ()
  #146    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #147    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #148    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #149    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #150    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #151    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #152    0x00007fff560af15e in DisplayList.encode(to:) ()
  #153    0x00007fff56005cc1 in protocol witness for Encodable.encode(to:) in conformance DisplayList ()
  #154    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #155    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #156    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #157    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #158    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #159    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #160    0x00007fff560af5d8 in DisplayList.Item.Value.encode(to:) ()
  #161    0x00007fff56005ce9 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item.Value ()
  #162    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #163    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #164    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #165    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #166    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #167    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #168    0x00007fff560afaef in DisplayList.Item.encode(to:) ()
  #169    0x00007fff56005d39 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item ()
  #170    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #171    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #172    0x00007fff536a39b7 in _PlistUnkeyedEncodingContainer.encode&lt;A&gt;(_:) ()
  #173    0x00007fff536a4b49 in protocol witness for UnkeyedEncodingContainer.encode&lt;A&gt;(_:) in conformance _PlistUnkeyedEncodingContainer ()
  #174    0x00007fff2f0ecf88 in Array&lt;A&gt;.encode(to:) ()
  #175    0x00007fff2f0ed0e8 in protocol witness for Encodable.encode(to:) in conformance &lt;A&gt; [A] ()
  #176    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #177    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #178    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #179    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #180    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #181    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #182    0x00007fff560af15e in DisplayList.encode(to:) ()
  #183    0x00007fff56005cc1 in protocol witness for Encodable.encode(to:) in conformance DisplayList ()
  #184    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #185    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #186    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #187    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #188    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #189    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #190    0x00007fff560af5d8 in DisplayList.Item.Value.encode(to:) ()
  #191    0x00007fff56005ce9 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item.Value ()
  #192    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #193    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #194    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #195    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #196    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #197    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #198    0x00007fff560afaef in DisplayList.Item.encode(to:) ()
  #199    0x00007fff56005d39 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item ()
  #200    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #201    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #202    0x00007fff536a39b7 in _PlistUnkeyedEncodingContainer.encode&lt;A&gt;(_:) ()
  #203    0x00007fff536a4b49 in protocol witness for UnkeyedEncodingContainer.encode&lt;A&gt;(_:) in conformance _PlistUnkeyedEncodingContainer ()
  #204    0x00007fff2f0ecf88 in Array&lt;A&gt;.encode(to:) ()
  #205    0x00007fff2f0ed0e8 in protocol witness for Encodable.encode(to:) in conformance &lt;A&gt; [A] ()
  #206    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #207    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #208    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #209    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #210    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #211    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #212    0x00007fff560af15e in DisplayList.encode(to:) ()
  #213    0x00007fff56005cc1 in protocol witness for Encodable.encode(to:) in conformance DisplayList ()
  #214    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #215    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #216    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #217    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #218    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #219    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #220    0x00007fff560af5d8 in DisplayList.Item.Value.encode(to:) ()
  #221    0x00007fff56005ce9 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item.Value ()
  #222    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #223    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #224    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #225    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #226    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #227    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #228    0x00007fff560afaef in DisplayList.Item.encode(to:) ()
  #229    0x00007fff56005d39 in protocol witness for Encodable.encode(to:) in conformance DisplayList.Item ()
  #230    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #231    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #232    0x00007fff536a39b7 in _PlistUnkeyedEncodingContainer.encode&lt;A&gt;(_:) ()
  #233    0x00007fff536a4b49 in protocol witness for UnkeyedEncodingContainer.encode&lt;A&gt;(_:) in conformance _PlistUnkeyedEncodingContainer ()
  #234    0x00007fff2f0ecf88 in Array&lt;A&gt;.encode(to:) ()
  #235    0x00007fff2f0ed0e8 in protocol witness for Encodable.encode(to:) in conformance &lt;A&gt; [A] ()
  #236    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #237    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #238    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #239    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #240    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #241    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #242    0x00007fff560af15e in DisplayList.encode(to:) ()
  #243    0x00007fff56005cc1 in protocol witness for Encodable.encode(to:) in conformance DisplayList ()
  #244    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #245    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #246    0x00007fff536a22c9 in _PlistKeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #247    0x00007fff536a33e5 in protocol witness for KeyedEncodingContainerProtocol.encode&lt;A&gt;(_:forKey:) in conformance _PlistKeyedEncodingContainer&lt;A&gt; ()
  #248    0x00007fff2f0ddae7 in _KeyedEncodingContainerBox.encode&lt;A, B&gt;(_:forKey:) ()
  #249    0x00007fff2f0d4a74 in KeyedEncodingContainer.encode&lt;A&gt;(_:forKey:) ()
  #250    0x00007fff55884a07 in _ArchivedViewStates.State.encode(to:) ()
  #251    0x00007fff55884c0d in protocol witness for Encodable.encode(to:) in conformance _ArchivedViewStates.State ()
  #252    0x00007fff2f381907 in dispatch thunk of Encodable.encode(to:) ()
  #253    0x00007fff536a0f98 in __PlistEncoder.box_&lt;A&gt;(_:) ()
  #254    0x00007fff536a0661 in PropertyListEncoder.encode&lt;A&gt;(_:) ()
  #255    0x00007fff536b7a2e in dispatch thunk of PropertyListEncoder.encode&lt;A&gt;(_:) ()
  #256    0x00007fff55bcbd3b in closure #1 in _ArchivedViewHost.archiveStates(to:count:body:) ()
  #257    0x00007fff55bcb694 in _ArchivedViewHost.archiveStates(to:count:body:) ()
  #258    0x00007fff55bcbf2d in _ArchivedViewHost.archiveStates(to:count:body:) ()
  #259    0x00007fff56d053f0 in ___lldb_unnamed_symbol1790$$WidgetKit ()
  #260    0x00007fff56d29189 in ___lldb_unnamed_symbol2908$$WidgetKit ()
  #261    0x00007fff56d31189 in ___lldb_unnamed_symbol2990$$WidgetKit ()
  #262    0x00007fff56d311c1 in ___lldb_unnamed_symbol2992$$WidgetKit ()
  #263    0x00007fff56cee869 in ___lldb_unnamed_symbol918$$WidgetKit ()
  #264    0x00007fff56cee148 in ___lldb_unnamed_symbol915$$WidgetKit ()
  #265    0x00007fff56cee669 in ___lldb_unnamed_symbol917$$WidgetKit ()
  #266    0x000000010eec48ab in closure #2 in closure #1 in ArticleTimelineProvider.getTimeline(in:completion:) at /Users/raimar/Xcode/faz-.net-ios/FAZ_NET/WidgetExtension/Models/ArticleTimelineProvider.swift:76
  #267    0x000000010eec48f0 in thunk for @escaping @callee_guaranteed () -&gt; () ()
  #268    0x00007fff2010535b in _dispatch_call_block_and_release ()
  #269    0x00007fff20106534 in _dispatch_client_callout ()
  #270    0x00007fff20113011 in _dispatch_main_queue_callback_4CF ()
  #271    0x00007fff203a8276 in __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ ()
  #272    0x00007fff203a2b06 in __CFRunLoopRun ()
  #273    0x00007fff203a1b9e in CFRunLoopRunSpecific ()
  #274    0x00007fff20846e61 in -[NSRunLoop(NSRunLoop) runMode:beforeDate:] ()
  #275    0x00007fff20847075 in -[NSRunLoop(NSRunLoop) run] ()
  #276    0x00007fff2005d506 in _xpc_objc_main ()
  #277    0x00007fff2005f4aa in xpc_main ()
  #278    0x00007fff2094ecc6 in -[NSXPCListener resume] ()
  #279    0x00007fff2f07aaaf in ___lldb_unnamed_symbol402$$PlugInKit ()
  #280    0x00007fff2f07a747 in ___lldb_unnamed_symbol398$$PlugInKit ()
  #281    0x00007fff2f07ae75 in ___lldb_unnamed_symbol406$$PlugInKit ()
  #282    0x00007fff5818b8f3 in EXExtensionMain ()
  #283    0x00007fff2088c079 in NSExtensionMain ()
  #284    0x00007fff20257415 in start ()
  </code></pre>