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) VALUES ('1f0662b06edd24ef708822e06158463a', -1, 1714384756, 1714384756, '0390a174', 7, 0)

Line : 158
File : sessions.php