[wp-trac] [WordPress Trac] #53439: Updating failed. The response is not a valid JSON response.

[WordPress Trac]

#53439: Updating failed. The response is not a valid JSON response.
-------------------------------------+-------------------------------------
 Reporter:  lupussolaris             |      Owner:  (none)
     Type:  defect (bug)             |     Status:  new
 Priority:  normal                   |  Milestone:  Awaiting Review
Component:  External Libraries       |    Version:  5.7.2
 Severity:  major                    |   Keywords:  2nd-opinion needs-
  Focuses:  ui, javascript,          |  testing
  performance                        |
-------------------------------------+-------------------------------------
 Hi, There seems to be a issue where when one tries to save a page you get
 the error "Updating failed. The response is not a valid JSON response."
 The only thing that seems to work is to set the permalink setting to
 plain.

 I believe the issue has something to do with paths. I am running PHP
 7.0.27

 I have installed a fresh install of WP in wwwroot on a hosted service
 Hostek. Updated to 5.7.2. The only plugin I have is gutenberg using 2021
 Theme. Set the permalink to Post Name. No problems with this setup.

 Then I installed a test WP installation into wwwroot/_test/abc. Updated to
 5.7.2. This only has gutenberg and 2021. Set the permalink to Post name. -
 WP throws the error and refuses to save the page - I do get offered to
 restore the backup so some sort of saving takes place. Following online
 guidance, I change the permalink to plain and then WP will save the page.

 It seems that the issue has something to do with json not liking that WP
 is not installed at the root of the server. Possibly json is testing the
 slug and erroring out due to path conflict.

 error site would be abc.com/_test/abc/slug.
 good site is abc.com/slug

 Kind Regards
 Richard

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/53439>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform