NullPointerException

Question

In addition to https://forum.plantuml.net/9921/detecting-stacktrace-illegalstateexception-timeout4-timeout

Sometimes this happens:

java.lang.NullPointerException

at net.sourceforge.plantuml.cucadiagram.dot.ProcessRunner$ThreadStream.run(ProcessRunner.java:252)

plantuml.1.2019.8.jar

Answer 1

I got this error with plugin 2.28.0 in Intellij Idea 2020.3 I was have two projects open and no activity in the PlantUML project at the time..(working on other non related project).