PlantUML import doesn't work in local network

[romkavt]

Starting PlantUML version 1.2024.5 and above, the PlantUML team had implemented some security constraints: the import from local network addresses, localhost, IP addresses and so on are fobidden by security policy.
This change breaks the correct work of IDEA plugin too - the diagrams with "!include" directives stops rendering from plantuml version 1.2024.5

I've raised an issue to PlantUML team:
plantuml/plantuml#1927

The current workarounds are:

1. Rollback to PlantUML version 1.2024.4

2. Tune the PlantUML securoty policy (Mac OS):

• set env variable with hostnames, for example

$ export PLANTUML_ALLOWLIST_URL=https://bitbucket.yooteam.ru

• then run idea from command-line

$ "/Applications/IntelliJ IDEA CE.app/Contents/MacOS/idea"

I suggest to implement the hosts allowlist in plugin settings.
For more information see the discussion here

• PlantUML import doesn't work in local network plantuml/plantuml#1927
• 2024.5 breaks https includeurl plantuml/plantuml#1820