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 ('831386b5ed3025b55ea8bc775ab14f90', -1, 1713566396, 1713566396, '12e035ca', -11, 0, 0)

Line : 187
File : sessions.php