Seaquel
SQL Server error code

SQL Server error 3066

SQL Server raises error 3066 at severity 16, which marks a problem with the query or data that you can correct.

Could not find the database file referenced by the file snapshot %.*ls. Please make sure that the URL points to a valid snapshot on a database file.
Msg3066
Severity16
Group3000–3999

Source: Database Engine events and errors