phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './tripleac_Forum/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 ('1aa0030b5b17e989104ab1d3eb29c64d', -1, 1462041778, 1462041778, '36a7563b', -1, 0, 0)

Line : 187
File : sessions.php