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 ('bff28bfcf18302b86182bde6af8f58e1', -1, 1490336042, 1490336042, '36d30b39', 2, 0, 0)

Line : 187
File : sessions.php