Issue title: Export Firefox bookmarks to html failed
 Issue body: Hi,

This is a downstream bug theresathornton@example.com, not sure about the status in 9.1:

https://bugzilla.redhat.com/show_bug.cgi?id=1084695

Thanks.

 Comments: 
 Comment 0: This is fixed in release 9.1.

 Comment 1: Thanks.

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