400 error - how to solve this?

Hello,

we have a 400 error on our pages. Always if we add a new page it comes more error. It looks like this for every page:

Resource HTTP Status Code Internal/External Content type Found on pages
https://freundebuch.org/wp-json/oembed/1.0/embed?url=https://freundebuch.org/ 400 Ungültige Anfrage Internal application/json 1
Resource HTTP Status Code Internal/External Content type Found on pages
https://freundebuch.org/wp-json/oembed/1.0/embed?url=https://freundebuch.org/&format=xml 400 Ungültige Anfrage Internal text/xml 1

How to solve this? thank you!

Hello,

  1. You can try to temporarily deactivate all your plugins except Sydney Toolbox and Page Builder by SiteOrigin, and see if it helps.

  2. Also you can try to clear your browser cache and cookies. You might want to check this as well:
    https://my.wealthyaffiliate.com/lev/blog/fix-error-400-bad-request-http-in-wordpress

Kind Regards, Roman.

thanks for your reply. You think this is a problem of a plugin?

it seems more that it’s coming of the theme?

Hello, I can’t tell for sure what causes it because it requires close inspection. Did you try what I suggested above?

Kind Regards, Roman.