[wp-trac] [WordPress Trac] #54544: fatal error when entering the site editor after updating to 5.9-beta1

[WordPress Trac]

#54544: fatal error when entering the site editor after updating to 5.9-beta1
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 Reporter:  pbiron             |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  5.9
Component:  Editor             |     Version:  trunk
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
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Comment (by ndiego):

 I was able to replicate by following the TT2 testing instructions. I
 downloaded the latest tagged release:
 [https://github.com/WordPress/twentytwentytwo/tags] and uploaded it
 directly to my test environment running 5.9 Beta. In doing so, the theme
 folder is `twentytwentytwo-0.4.0`. If you then try and access the Site
 Editor, you get the fatal error. Correcting the theme folder back to
 `twentytwentytwo` made the fatal error disappear.

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Ticket URL: <https://core.trac.wordpress.org/ticket/54544#comment:8>
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