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 ('62f9dc88e5aed45616c568bb1ca65ae6', -1, 1714731488, 1714731488, '038df499', -4, 0, 0)

Line : 187
File : sessions.php