phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './forumradionet/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 ('a5fbc499769e5fd963f0049a00acd3a0', -1, 1466877855, 1466877855, '36c6177e', -4, 0, 0)

Line : 187
File : sessions.php