Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is: The requested URL was not found on this server.
I don't think this is a recommended method of installing Certbot any longer. I believe the PPA is not maintained. Please see https://certbot.eff.org/ for the current recommendations for installing Certbot.
sudo apachectl -t -D DUMP_VHOSTS
AH00526: Syntax error on line 33 of /etc/apache2/sites-enabled/000-default-le-ssl.conf:
SSLCertificateFile: file '/etc/letsencrypt/live/karl.datalyxt.de/fullchain.pem' does not exist or is empty
Action '-t -D DUMP_VHOSTS' failed.
The Apache error log may have more information.
sudo ss -tlnp 'sport = :https'
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 511 *:443 : users:(("apache2",pid=612894,fd=6),("apache2",pid=612378,fd=6),("apache2",pid=612377,fd=6),("apache2",pid=612376,fd=6),("apache2",pid=612375,fd=6),("apache2",pid=612286,fd=6),("apache2",pid=612279,fd=6),("apache2",pid=612277,fd=6),("apache2",pid=612267,fd=6),("apache2",pid=245268,fd=6),("apache2",pid=989,fd=6))
before i installed the certbot certificate the page was available. so i hoped with deleting the certificate my page is available again. i took help from this blog (it is german).
but i doesn´t change anything.