The Fix for Publishing failed Error message: The response is not a valid JSON response in wordpress
i got error on a new blog post, and I got this error message:
Publishing failed. Error message: valid JSON
Initially I thought there might be a weird, non-ASCII character in my content, because I had copied and pasted some code. So I removed the content, hit Publish again, this time no problem. Then I manually wrote a
few paragraphs, and hit Update, whereupon I got this error messageUpdating failed.
What the heck is going on!?
I did some quick searching, and it turns out that a few people have bumped into this issue, but no one seemed to have a solution. Some said hosting
security settings, others said plugin conflicts, still others said it was a Gutenberg bug and just wait for the next release.
With no obvious culprit and no obvious solution, I decided to debug it myself. I went through the standard procedure of reducing complexity:
- Ensure everything is up to date ———————————(if still got error then next step follow )
- Disable plugins ——————————— (if still got error then next step follow )
- Change theme to basic WordPress theme ——————-(if still got error then next step follow )
- Reinstall WordPress —————————————————(if still got error then next step follow )
- Reset Permalinks ——————————————————-(if still got error then next step follow )
- Remove or rename
.htaccessfile
Still no luck! How is this possible? Perhaps I really did need to wait for the next WordPress release…?
While I was accessing the filesystem to remove the .htaccess file, I noticed that there was also a .user.ini file, which was created by the Wordfence plugin when optimizing its firewall. The file contained the following code:
; Wordfence WAF
auto_prepend_file = '/home/accountname/public_html/wordfence-waf.php'
; END Wordfence WAFIt seems that even with the WordFence plugin deactivated, the Wordfence firewall was still in place via this file. As soon as I removed the .user.ini file, I could publish and update again!
So that’s the cause. But we still need a solution. If you’ve come across this issue, let me know how you resolved it. In the meantime, I will continue testing and see if I can ensure Gutenberg and Wordfence play nice together.
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