Updating failed. The response is not a valid JSON response.

  • Trying to put in a script in the HTML Gutenberg block and receive Updating failed. The response is not a valid JSON response. every time. Yes, you can switch over to classic mode, but then you can’t use Gutenberg Blocks. Even using the Classic block doesn’t work and I get the same results.

    I have been able to use a script with the HTML block for some time now with no issues until a few days ago. No changes on my site and I have had NameHero look on their end and there is no issues with the server.

    I have also tried turning off Mod Security when I make my post, but that doesn’t seem to work now.

    InLinkz new of this problem some time ago and made a plugin so I can add their script code to a post.

    Is WordPress going to help on this too?

Viewing 3 replies - 1 through 3 (of 3 total)

  • Hello,

    I have encountered this problem too but it turned to be an issue with a firewall setting. Once adjusted the problem went away. I don’t believe this to be a WordPress problem. Rather it is environmental. Do you have a firewall enabled? Are you using a caching plugin? Are you using a CDN? If yes, to any of them check your settings.

    Thread Starter tammya1999

    (@tammya1999)

    I have turned off Cloudflare and WP Fastest Cache and ModSecurity and it’s still an issue. I wouldn’t know what settings to look for. I’ve also read this may be a REST API problem. Thanks

    • This reply was modified 4 years, 4 months ago by tammya1999.
    Thread Starter tammya1999

    (@tammya1999)

    I had to whitelist my IP address at CloudFlare and that fixed the problem. Thanks

Viewing 3 replies - 1 through 3 (of 3 total)
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