phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './vrforum/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a029a580e456de6c32e199bccc69da09', -1, 1397720174, 1397720174, '36ccd7d1', 5, 0, 0)

Line : 187
File : sessions.php