> Could not initialize class org.codehaus.groovy.classgen.Verifier code example
Example: Could not initialize class org.codehaus.groovy.vmplugin.VMPluginFactory
On your Android or Intellij Project, go to:
yourprojectname/gradle/wrapper/gradle-wrapper.properties.
Property distributionUrl should be:
distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-bin.zip
If it's an older version then change it, run ./gradlew clean build and try again.