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 ('44dfde32372072a7ad41d07f96d45c66', -1, 1623704710, 1623704710, '03d74f74', 6, 0, 0)

Line : 187
File : sessions.php