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 ('18d16fac23c83ea3eeb73730b52ed2ae', -1, 1490597541, 1490597541, '3693d4ad', 8, 0, 0)

Line : 187
File : sessions.php