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 ('16d618d30efaf8c4b3369bd6ae91caa6', -1, 1481100576, 1481100576, '36d35269', 26, 0, 0)

Line : 187
File : sessions.php