You have an error in your SQL syntax

hello
my website URL is : hakkmni.com

it works fine

the problem is that i am trying to access my cpanel
but i can’t
i am getting this messege:
You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ‘’’ at line 1

and when i am trying to change something in my website at wordpress i get this messege:

Unable to communicate back with site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP.

Please read this:

Try to modify the PHP file you’re trying to modify through the File Manager.

Ok thank you so much.