delete domains problem.

[Sener KUL]

I can't delete domains whatever i try, how can i fix this problem?

Error: Unable to remove domains: Problems occured while removing domains: Delete database user failed: Failed to connect to database: Can't connect to MySQL server on 'localhost' (10061)

or

Error: DNSZone::Table::select() failed: no such row in the table

thank's
Sener KUL