Preference is important
Install JAVA and set PATH Setting the path of Oracle Java https://java.com/ja/download/win10.jsp (I also installed Java SE Development Kit 14 )
Run Graphviz .msi without changing the installation location (https://www2.graphviz.org/Packages/stable/windows/10/ ), then set PATH Set the value up to dot.exe with the variable name of GRAPHVIZ_DOT
Install VSC Plugin PlantUML jebbs 2.13
I have not changed anything in the settings, but be careful not to put extra things in sttting.json
- It took 14:40 to 19:40, so I made trial and error for about 5 hours.
References  https://proengineer.internous.co.jp/content/columnfeature/5205  https://eng-entrance.com/java-install-jdk-windows