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 ('dedf0f99e4a527b8a6c574434867a02d', -1, 1713518340, 1713518340, '030f93d7', 5, 0, 0)

Line : 187
File : sessions.php