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 ('83d3436a32fd19de15f4d069ce024a9e', -1, 1714012311, 1714012311, '030fdbd9', -4, 0, 0)

Line : 187
File : sessions.php