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 ('3d3ea8942e49809c049537d9db87c221', -1, 1714011376, 1714011376, '038dcabb', -4, 0, 0)

Line : 187
File : sessions.php