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 ('a3c2ac2d49d1b46d71221bd19bdab288', -1, 1713527103, 1713527103, '127598fb', -4, 0, 0)

Line : 187
File : sessions.php