could not initialize class org.codehaus.groovy.runtime.invokerhelper flutter vscode code example

Example 1: Could not initialize class org.codehaus.groovy.runtime.InvokerHelper

This is because of the gradle version:

In your project
go to: gradle / wrapper / gradle-wrapper.properties /

change the version:
distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip

to
distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-all.zip

Source
https://stackoverflow.com/questions/35000729/android-studio-could-not-initialize-class-org-codehaus-groovy-runtime-invokerhel

Example 2: Could not initialize class org.codehaus.groovy.runtime.InvokerHelper

Add the following lines to your $HOME/.bash_profile or $HOME/.bashrc (if you are using zsh then ~/.zprofile or ~/.zshrc) config file:
export JAVA_HOME="/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home"