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 ('66cf6a75fae9aba84ecd4ec7b8c33077', -1, 1490414554, 1490414554, '36a66b33', 15, 0, 0)

Line : 187
File : sessions.php