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 ('4fb04602e0d56fb73feeea6d5fb4b81f', -1, 1623703862, 1623703862, '03d74f74', -4, 0, 0)

Line : 187
File : sessions.php