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 ('47f1136173f222e5b935fad8a73cd594', -1, 1714623576, 1714623576, '12def015', -8, 0)

Line : 158
File : sessions.php