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 ('08591aa5d1e8be1bdd397580ee511eec', -1, 1490526704, 1490526704, '369d035c', 12, 0, 0)

Line : 187
File : sessions.php