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 ('6ca7c6b362b9dbcf71711a53fe0fc151', -1, 1490540634, 1490540634, '36ccfc25', -4, 0, 0)

Line : 187
File : sessions.php