Import of external link sometimes randomly fails

[wimdeblauwe]

I like to use icons like this:

@startuml
!include <C4/C4_Container>

'See https://github.com/tupadr3/plantuml-icon-font-sprites for icons
!$ICONURL = "https://raw.githubusercontent.com/tupadr3/plantuml-icon-font-sprites/v3.0.0/icons"
!include $ICONURL/common.puml
!include $ICONURL/devicons/java.puml

Container(backend, "Backend", "Java/Spring Boot", "Main processor of information", $sprite="java")

@enduml

However, sometimes, the icon cannot be loaded and the diagram preview shows an error like "Could not open https://raw.githubusercontent.com/tupadr3/plantuml-icon-font-sprites/v3.0.0/icons/common.puml" for example.

If I check the idea.log, I see this log line:

2025-02-13 09:17:46,598 [4336294]   INFO - STDERR - issue raw.githubusercontent.com java.util.concurrent.ExecutionException: java.io.IOException: HTTP error 404 with 404: Not Found

If I manually check the URL, it always works fine. To get out of it, I usually need to wait a bit and change some random thing like adding a space and suddenly it work again.