How to correctly move a wiki to a new domain?

Question

Wiki engines

Moved the wiki engine to a new domain. All references to the old domain in the LocalSettings.php file were corrected for the new one.
The login form opens correctly, but then everything breaks. Moreover, according to php error messages, it is clear that the engine is looking for files with the names of the old domain. Those. somewhere the old domain is still registered: in the file system or in the database.
How to fix?