Question How do I resolve this?

[Colonel36]

Server operating system version

Ubuntu 20.04

Plesk version and microupdate number

Plesk Obsidian18.0.57

HTTP/2 Test​

Verify HTTP/2 support
HTTP/2 protocol is not supported.
ALPN extension is not supported.
Many thanks

 

[Kaspar]

(Plesk for Linux) HTTP/2 Support in Plesk

Note: This topic is about HTTP/2. There is a newer protocol version, HTTP/3, which has significant advantages. Learn ...

docs.plesk.com