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 ('d5aee726f7e8d5eff5a0b12093b7747a', -1, 1774647594, 1774647594, 'd849d86a', 3, 0, 0)

Line : 187
File : sessions.php