Hello. I have a problem with my wordpress page. When I'm trying to create new post I receive error: Fatal error: Call to undefined function wp_unslash() in /home/hotspotb/public_html/wp-includes/functions.php on line 1263
Тhe left side options (files, links, settings etc) of wordpress are still there, but I'm unable to post something.
When I'm trying to update the wordpress I receive the same error. There is no button "Update". It is the same with plugins page.
I did not installed new plugins. The last thing that I did was to create subdomain with another wordpress. On the subdomain everything is OK. I remove it, but the problem still persist.
I try to update wordpress manually but there is no effect.
Could you help me to solve this issue