phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './nwforum_1/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('961cde2349c3eb2e9b8bec2d3ca5f15d', -1, 1558464851, 1558464851, '36a72ff8', 12, 0, 0)

Line : 187
File : sessions.php