phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './pocketpctalk_bb/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 ('57d3a38f8ad7cae36728ddb09120a781', -1, 1513606974, 1513606974, '365cc9e8', 0, 0, 0)

Line : 187
File : sessions.php