phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './d7420_phpbb/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 ('54d8fde9c0ee55c952bbde18a0213254', -1, 1508383947, 1508383947, '7f000001', 4, 0, 0)

Line : 187
File : sessions.php