title: Unhandled Exception: PlatformException(channel-error, Unable to establish connection on channel., null, null)
body: <p>Got this error, suddenly. i don't know what i did wrong.
  <a href="https://i.stack.imgur.com/tWUxK.png" rel="noreferrer">[ERROR:flutter/lib/ui/ui_dart_state.cc(198)] Unhandled Exception: PlatformException(channel-error, Unable to establish connection on channel., null, null)</a></p>