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 ('fdef95497c28a0ec6e9c45156ee51069', -1, 1490653757, 1490653757, '36cd99c0', 11, 0, 0)

Line : 187
File : sessions.php