Could Not Initialize Class Org.codehaus.groovy.reflection.reflectioncache

I've been using Flutter on Android Studio. Today, I updated it and everything went downhill. I've been having different errors throughout my attempt to fix this. First error: could

Solution 1:

I had the same problem a few days ago. I fixed it by updating the Gradle version in android/gradle/wrapper/gradle-wrapper.properties to :

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

For it to update, you just have to flutter run.

Solution 2:

I finally fixed it by uninstalling anything beyond Java 8. It seems like Android Studio doesn't like upgraded Java. Everything works now.

Solution 3:

I fixed it by updating gradle version.

1. Go to android->gradle->wrapper->gradle-wrapper.properties file and update gradle to latest version.

   distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip
   

2. Go to android->build.gradle file

       classpath 'com.android.tools.build:gradle:4.2.0'

3. flutter clean

4. flutter run

Solution 4:

1. Do you get any error when you run

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flutter doctor 

in terminal.

2. Did you run

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flutter clean

in terminal from your project folder?