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 ('fbef27e5d167a1f6383577d5a5240a34', -1, 1713575550, 1713575550, '12e00019', 5, 0, 0)

Line : 187
File : sessions.php