phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpBB/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 ('ea5ed8a6f2b9518d65faa2bc3428e145', -1, 1472686104, 1472686104, '36c66400', -1, 0, 0)

Line : 187
File : sessions.php