NoClassDefFound error while running example code

[sapanparikh18]

When running the example code exactly as in the read me file I am getting the following exception

        java.lang.NoClassDefFoundError: Could not initialize class edu.umd.cs.findbugs.ba.AnalysisContext
	at edu.umd.cs.findbugs.FindBugs2.clearCaches(FindBugs2.java:347)
	at edu.umd.cs.findbugs.FindBugs2.execute(FindBugs2.java:327)
	at guru.nidi.codeassert.findbugs.FindBugsAnalyzer.analyze(FindBugsAnalyzer.java:50)
	at code.scan.CodeQualityTest.findBugs(CodeQualityTest.java:31)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:515)
	at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:171)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:105)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)

It's a multi build Gradle project with dependencies set like the following

subprojects { subproject ->
    apply plugin: "java"
    apply plugin: 'checkstyle'
    dependencies {
        testImplementation 'guru.nidi:code-assert:0.9.15'
        testCompile("org.assertj:assertj-core:3.11.1")

    }
...