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 ('46e8e23ec33e3ce50618eb1385bd882f', -1, 1713305032, 1713305032, '12de43fb', -4, 0, 0)

Line : 187
File : sessions.php