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 ('7e316acc4b896787bfdf2e3351a98b52', -1, 1714032811, 1714032811, '030fe1ad', -9, 0, 0)

Line : 187
File : sessions.php