Unable to install, stuck at the step of adding a super administrator

I downloaded the latest Matomo, and configured an environment that meets the requirements according to the help document, and it passed the environment test of the installer, but no matter how I try to install, change different servers or Nginx and Mysql versions, I always fail to set up After super administrator, it prompts “XXX administrator already exists”, but I can clearly say that I have a brand new database, an empty table without any data, and this problem still occurs, which puzzles me. I hope to get help.