Execution failed due to configuration error: Invalid permissions on Lambda [on hold]

I created the server infrastructure using API Gateway, Lambda and DynamoDB. There are two methods in the same resource. The POST endpoint works fine. However, my GET endpoint test shows:

Execution failed due to configuration error: Invalid permissions on Lambda function

I checked the ROLE in IAM: AWSLambdaFullAccess, AmazonDynamoDBFullAccess, AWSLambdaExecute, AWSLambdaInvocation-DynamoDB

I did not what's wrong with my configuration.