Catchable fatal error

Hello,

I have upgraded my WordPress to 4.8
Theme – BigBrother, I have some plugins, so disable all of them.
I have only one issue, when I am browsing to category
/category/1/ etc
I got this error message – Catchable fatal error: Object of class WP_Error could not be converted to string in /wp-includes/formatting.php on line 3774

Can somebody help me?

Unfortunately I don’t have wordpress backups with 4.7 (

• This topic was modified 7 years, 9 months ago by jekax.