phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './mw_phpbb/phpbb_mw_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_mw_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('52d8b33b9d71c49bc6786b74b1b2588e', -1, 1490583197, 1490583197, '36c59fad', 8, 0, 0)

Line : 187
File : sessions.php