phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './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 ('82485c2007309a808da7d53026b8ecea', -1, 1464423660, 1464423660, '369ed119', 14, 0, 0)

Line : 187
File : sessions.php