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 ('cedf06184e0bd6c49368c7f41c9e4194', -1, 1490575768, 1490575768, 'ae8194ef', 1, 0, 0)

Line : 187
File : sessions.php