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 ('b8635ad8fe7584e93e6b93c10b90745c', -1, 1472180508, 1472180508, '36c6e3c4', -11, 0, 0)

Line : 187
File : sessions.php