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 ('cc6298f9dbaccd3c45d471a9cc02e66b', -1, 1713800302, 1713800302, '2cd295cd', -11, 0, 0)

Line : 187
File : sessions.php