relaxation api – 403 error when publishing a submit in wordpress. Error => Publishing failed. The response shouldn’t be a sound JSON response

I’m growing a web site for my consumer and when I attempt to submit a submit I get the next error:

“Publishing failed. The response shouldn’t be a sound JSON response.”

Apparently, it is a widespread error so I discovered numerous options for it on-line. Like updating the permalink construction, eradicating and readding .htaccess. However, none of it really works.

Right here is the screenshot of the error.

It really works after I use the basic editor, it additionally works after I submit a submit with simply the title. The issue appear to be the gutenberg block editor however I would like it as a result of I’ve a block plugin developed for the location.

Additionally, I discovered this answer:

https://www.dreamhost.com/weblog/how-to-fix-403-forbidden-error-wordpress/#:~:textual content=Whenpercent20thepercent20403percent20statuspercent20code,specificpercent20pagepercent20onpercent20yourpercent20site.

Perhaps it really works, however I should be certain earlier than I inform my consumer about this.