我试图获得SSL证书，让我们加密nginx。首先，我使用命令$ wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm和$ sudo rpm -ihv --nodeps ./epel-release-latest-8.noarch.rpm添加epel，它安装没有问题，然后我尝试sudo yum install python3-certbot-nginx并得到错误消息：

Problem: package certbot-1.22.0-1.el8.noarch requires python3-certbot = 1.22.0-1.el8, 
but none of the providers can be installed
  - conflicting requests
  - nothing provides python3.6dist(setuptools) >= 39.0.1 needed by python3-certbot-1.22.0-1.el8.noarch
  - nothing provides python3.6dist(cryptography) >= 2.5.0 needed by python3-certbot-1.22.0-1.el8.noarch
  - nothing provides python3.6dist(configobj) >= 5.0.6 needed by python3-certbot-1.22.0-1.el8.noarch
  - nothing provides python3.6dist(distro) >= 1.0.1 needed by python3-certbot-1.22.0-1.el8.noarch
  - nothing provides /usr/bin/python3.6 needed by python3-certbot-1.22.0-1.el8.noarch
  - nothing provides python3.6dist(pytz) needed by python3-certbot-1.22.0-1.el8.noarch
  - nothing provides python(abi) = 3.6 needed by python3-certbot-1.22.0-1.el8.noarch
  (try to add '--skip-broken' to skip uninstallable packages)

我也尝试了sudo dnf install python3-certbot-nginx，但得到了类似的错误。我了解到我可能需要一个代码准备建设者，但还没有能够安装它。请问我怎么才能得到它。如果这不是问题所在，请告诉我我做错了什么，我该如何解决？