[wp-trac] [WordPress Trac] #52570: WordPress 5.6.1 bug/error "Publishing failed. The response is not a valid JSON response."

[WordPress Trac]

#52570: WordPress 5.6.1 bug/error "Publishing failed. The response is not a valid
JSON response."
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 Reporter:  djacob56      |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Editor        |     Version:  5.6.1
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:
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Comment (by skorasaurus):

 Thanks for reporting.

 I've received this a couple times and haven't been able to isolate the
 cause just yet... Does this occur on different themes? Does this happen on
 the twentytwenty or twentytwentyone theme?

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Ticket URL: <https://core.trac.wordpress.org/ticket/52570#comment:2>
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