phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './kidnem998/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 ('8b503138f1ca5e7057ee180eb00fc6d3', -1, 1464237616, 1464237616, '3651bfca', -1, 0, 0)

Line : 187
File : sessions.php