Error 13, method not found

Trying to save my preferences and get a small notification at the bottom of the browser screen that says, in a json style string, error code 13 method not found.

Before posting this, I pulled the freshest code on branch master and let ttrss do it’s database schema update. Still get same result.

Any suggestions welcome.

Do $web_server_user have permission to save the preferences where you put them?

first of all try doing it in browser incognito window i.e. without addons

@fox That did it. Must be an extension. Thanks.

@Kierun These preferences are stored in the database.