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 ('d959120c39b07aa6d2ed9b0a84447868', -1, 1471985585, 1471985585, '6b1611ba', -4, 0, 0)

Line : 187
File : sessions.php