Failed to load resource: the server responded with a status of 431 ()

This error appeared only yesterday. When I try to do anything in admin except adding posts/pages, there is a white screen and chrome console reveals. I can't update wordpress core, can't update/install/delete plugins ... 

Failed to load resource: the server responded with a status of 431 ()

No idea what's the issue and how to fix it. Thanks for helping out!

UPDATE - this was a Chrome issue - after I cleared my cookies, everything works OK

Could somebody explain it to me? Thank you!

Topic admin wp-admin errors Wordpress

Category Web

1
answered at

here is explanation of the 431 error.

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/431

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