I'm trying to get http4k running in AWS lambda following https://www.http4k.org/guide/modules/serverless/#aws-lambda-integration and get the following error when trying to execute it:

{
  "errorMessage": "Class not found: org.http4k.serverless.lambda.LambdaFunction",
  "errorType": "java.lang.ClassNotFoundException"
}

I'm packaging the fatjar with the shadow plugin and uploading the zip. Do you remember how you did it?