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 ('3c92a0a2907e880441f4e9c4553f10e4', -1, 1714037981, 1714037981, '0389aed8', -2, 0, 0)

Line : 187
File : sessions.php