[wp-trac] [WordPress Trac] #51959: "the response is not a valid JSON response” error in WordPress

[WordPress Trac]

#51959: "the response is not a valid JSON response” error in WordPress
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 Reporter:  elmwp1             |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  General            |     Version:
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
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Changes (by azaozz):

 * keywords:   => reporter-feedback


Comment:

 Hi @elmwp1, welcome to trac.

 > When I go to update a page in WordPress Twenty Twenty

 Could you give some more details please:
 - What are you using to update that page? The block editor, classic
 editor, etc.
 - This sounds like an error with an AJAX response. Could you look at the
 browser tools -> network and see what the actual response from the server
 is? This type of errors are often caused by a PHP warning that's returned
 together with the JSON response.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51959#comment:1>
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