Wiki: Cannot save changes, getting HTTP 406 error

[Ilya Belkin]

I want to add something like "The localization files are processed in reverse order from Z to A, adding a or numbers at the beginning of your localization file will make sure it applied last. If you replacing vanilla localization a better practice is to use folder replace as in /english/replace/your_files.yml" here https://vic3.paradoxwikis.com/index.php?title=Localization&action=edit
but getting this when I try to save changes:

No matter what I try seems like I cannot edit the wiki (both as a guest or with my account).

 

[grotaclas]

Have you already tried the source editor which you get by clicking on "edit source"? The saving in the visual editor is often broken. Likewise switching from the visual editor to the source editor gives the same error, so you have to do your whole edit in the source editor