phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './db_mtss3/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 ('e3d42809217e21c9aa2368113aa0e2d0', -1, 1490575096, 1490575096, '32107ac8', 12, 0, 0)

Line : 187
File : sessions.php