> java -jar ./plantuml.jar -picoweb:8000:127.0.0.1 -v
(0.000 - 806 Mo) 799 Mo - SecurityProfile LEGACY
(0.005 - 806 Mo) 799 Mo - PlantUML Version 1.2021.14
(0.005 - 806 Mo) 799 Mo - GraphicsEnvironment.isHeadless() true
(0.005 - 806 Mo) 799 Mo - Forcing -Djava.awt.headless=true
(0.006 - 806 Mo) 799 Mo - java.awt.headless set as true
webPort=8000
when I access 127.0.0.1, I get
This site can’t be reached
127.0.0.1 refused to connect.