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 ('477b3014e1d96e5e942b8d30e42f4dfa', -1, 1490435701, 1490435701, '369e56f3', 14, 0, 0)

Line : 187
File : sessions.php