Why does OpenCart display "Error: Could not load database file mysql!" after migration?

Question

opencart

SUBJECT.
After migration, OpenCart displays "Error: Could not load database file mysql!".
Corrected paths in config.php. There is nothing in the "admin" folder except index.html.
Corrected the rights to all files. I even put 777, but it didn't work.
The site worked fine on the previous hosting.
Help me please.

Answer 1

The problem was in the wrong path in the config.php file.
Need to check more carefully. The path to the "database" folder was set incorrectly.
Was: "...database/"
Became: "...system/database/"