Today I got an issue in WordPress. When I try to create a new page and uploading a new image in the WordPress admin section, I try to find out the solution, but I didn't get it... So after sanding an hour I got a solution...
"Publishing failed. Error message: The response is not a valid JSON response."
Right now, you can use the Classic Editor plugin for fixing this issue.
The answer for the error is the editor I didn't know, but there is a new editor issue. If you are getting the same issue, then please use the below plugin. For fixing these issues, I'm doing R&D on this issue. If I get an exit solution, then will I make an update soon...