java.lang.IllegalAccessError in dataflow's CFG visualizer

I git-cloned the checker-framework repo and ran the test for constant propagation in Intellij with open-jdk18.

> Task :dataflow:ConstantPropagation.main() FAILED
Exception in thread "main" java.lang.IllegalAccessError: class org.checkerframework.dataflow.cfg.visualize.CFGVisualizeLauncher (in unnamed module @0x297e187e) cannot access class com.sun.tools.javac.util.Context (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.util to unnamed module @0x297e187e
	at org.checkerframework.dataflow.cfg.visualize.CFGVisualizeLauncher.generateMethodCFG(CFGVisualizeLauncher.java:223)
	at org.checkerframework.dataflow.cfg.visualize.CFGVisualizeLauncher.generateStringOfCFG(CFGVisualizeLauncher.java:309)
	at constantpropagation.ConstantPropagation.main(ConstantPropagation.java:32)

It seems that the Context constructor from com.sun.tools.javac.util is not working.

Thanks!

Start with dataflow/src/main/java/org/checkerframework/dataflow/cfg/visualize/CFGVisualizeLauncher.java, especially generateMethodCFG at line 223, and reproduce the failure using constantpropagation/ConstantPropagation.java. Check how the JDK module access error affects the CFG visualizer; done means the constant-propagation test runs without this IllegalAccessError on OpenJDK 18.