Hi @robato
the link is wrong, openssl can't find your file. In which directory do you run this command?
Another user
uses
openssl pkcs12 -export -out bundle.pfx -inkey privkey.pem -in cert.pem -certfile chain.pem -password pass:xxx
so your command looks good. It's only a problem of finding the correct files.
PS: You have a wrong link ( https://check-your-website.server-daten.de/?q=mattesnille.se - mixed content and other checks):
script
https://s.codepen.io/assets/libs/modernizr.js
404
Not Found
1
missing file
That file doesn't exist, so something may not work.