phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './myforum/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 ('717d9584a8bfffc12c147f448a457fae', -1, 1772264192, 1772264192, 'd849d858', -9, 0, 0)

Line : 187
File : sessions.php