Hello HEIKOFRANZ,
The template is OK with but if you have some minconfigurations on your server you may have problems, the minimum requirements you can find here: https://en.wikipedia.org/wiki/HTTP/2#Server_software
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The template is OK with but if you have some minconfigurations on your server you may have problems, the minimum requirements you can find here: https://en.wikipedia.org/wiki/HTTP/2#Server_software
Regards, AS Team.