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 ('8cad296a2db5ebccfa91b8ea4e50999c', -1, 1713269151, 1713269151, '039177c7', -10, 0, 0)

Line : 187
File : sessions.php