phpBB : Kritischer Fehler

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 ('a974b1e519498351b0ab3d1df4cc2243', -1, 1623708285, 1623708285, '03d74f74', -4, 0, 0)

Line : 187
File : sessions.php