phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './ultimate/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 ('f9442a4c0a41cc5bdacbd56fa9ec47f0', -1, 1555986473, 1555986473, '12e893d7', 0, 0, 0)

Line : 187
File : sessions.php