eZ Publish Basic a community based framework and website cms

MySQL Query Error: INSERT INTO eZSession_Session ( ID, Created, LastAccessed, Hash ) VALUES ( '1838261', '1788989040', '1788989040', '5db60ecb750131f4b48849ca1447dfc0' )
Error number:5
Error message: database is locked
MySQL Query Error: INSERT INTO eZSession_SessionVariable ( ID, SessionID, Name, Value, GroupName ) VALUES ( '2981322', '1838261', 'SessionIP', '18.97.14.86', '' );
Error number:5
Error message: database is locked
eZ Publish Basic a community based framework and website cms

Failed to get article category definition for ID 21