error login admin

Please help me. I can’t login admin. even though the username and password are correct, I even disabled the plugin.

an error like this appears when logging in:
Error: Cookies are blocked or not supported by your browser. You must enable cookies to use WordPress.

I’ve also enabled cookies and I tried it on another device with the same error. and I tried to fill in the username and password at random, it turns out the error is the same as that.

after I access the urldomainname.com/wp-admin/

error appears:

Warning: fopen(/home/farihweb/public_html/wp-content/plugins/everest-forms/everest-forms.php): failed to open stream: No such file or directory in /home/farihweb/public_html/wp-includes/functions.php on line 6570

Warning: Cannot modify header information - headers already sent by (output started at /home/farihweb/public_html/wp-includes/functions.php:6570) in /home/farihweb/public_html/wp-includes/functions.php on line 6821

Warning: Cannot modify header information - headers already sent by (output started at /home/farihweb/public_html/wp-includes/functions.php:6570) in /home/farihweb/public_html/wp-includes/pluggable.php on line 1355

Warning: Cannot modify header information - headers already sent by (output started at /home/farihweb/public_html/wp-includes/functions.php:6570) in /home/farihweb/public_html/wp-includes/pluggable.php on line 1358

please help me because this error has been a long time even i’ve been looking for other tutorials can’t all.

I use multi site and all my websites can’t login, the error is the same