phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './soocool2_db/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 ('764fdc50b21f8b5a051db6b0ccfc03ba', -1, 1454964876, 1454964876, 'b8488aff', -4, 0, 0)

Line : 187
File : sessions.php