phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bdc1a3062c5ea33074ca8e613dab7add', -1, 1747881312, 1747881312, '12dc3ead', 2, 0, 0)

Line : 190
File : sessions.php