Getting (Invalid) when adding custom taxonomy of custom post type link in menu [closed]

I have copied my plugin file to a new one .php file and deactivated the old one / activated the new one. Then everything worked successfully. I need to mention that I changed the names of the taxonomies from “Kind” to “Stuff” so I suppose there was an error or something in the database.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)