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 ('4115843783ea983df553d66361c9573e', -1, 1714462392, 1714462392, '12ddaef8', 8, 0)

Line : 158
File : sessions.php