[wp-trac] [WordPress Trac] #54312: Widgets editor blocks

[WordPress Trac]

#54312: Widgets editor blocks
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 Reporter:  donno1                     |      Owner:  (none)
     Type:  defect (bug)               |     Status:  new
 Priority:  normal                     |  Milestone:  Awaiting Review
Component:  Widgets                    |    Version:  5.8.1
 Severity:  major                      |   Keywords:
  Focuses:  accessibility, javascript  |
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 Hi there, we have noticed a bug in widgets block.

 When editing Widgets in Blocks will repeat with errors and the console
 shows it is a JSON error stating 'The response is not a valid JSON
 response' and also says 503 error with it.
 Troubleshooting I have done:
 - Have tried downgrading versions, errors will be removed but unable to
 move widgets around. Now I have the current version.
 - Deactivating all plugins, one reactivated they come back and it is not
 related to a plugin.
 - did permalinks,
 - re did htaccess file
 - classic widgets plugin also takes away errors but you cant move widgets.

 none of these steps worked.

 Some guidance on what is happening would be greatly appreciated. Thank you

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Ticket URL: <https://core.trac.wordpress.org/ticket/54312>
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