Error establishing a database connection in wordpress

I had this issue some days ago with a multisite, loading a live dump to local development. After some debugging I noticed, that the error message wasn’t right.
The database was connected, but the path in the database to the sites was wrong.
You can check table <your-prefix>_site and <your-prefix>_blogs if columns domain and path are correct.
That solved my problem, as the error message told something else.

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