我正在用springboot开发一个java应用程序。我正在使用“awsjavasdk”，并用localstack模拟aws。
但是当我尝试用下面的代码将它插入到bucket s3（以前在localstack上创建）中时，它返回：“（服务：amazons3；状态代码：500；错误代码：500；请求id:33c21ac340bc212f）
由于这是一个错误，我想不出原因。拜托，我怎么解决？

public void storeFile(File file) {
        try {
            AmazonS3 s3Client = createS3Client();
            String fileName = file.getName();
            s3Client.putObject(bucketName, fileName, file);
        } catch (AmazonServiceException e) {
            throw new RuntimeException();
        } catch (SdkClientException e) {
            throw new RuntimeException();
        }
    }
    private AmazonS3 createS3Client() {
        AWSCredentials credentials = new BasicAWSCredentials(awsAccessKey, awsSecretKey);
        if (s3Endpoint != null) {
            AwsClientBuilder.EndpointConfiguration endpoint = new AwsClientBuilder.EndpointConfiguration(s3Endpoint, region);
            return AmazonS3ClientBuilder.standard()
                    .withEndpointConfiguration(endpoint)
                    .withCredentials(new AWSStaticCredentialsProvider(credentials))
                    .build();
        }
        Regions clientRegion = Regions.fromName(region);
        return AmazonS3ClientBuilder.standard()
                .withRegion(clientRegion)
                .withCredentials(new AWSStaticCredentialsProvider(credentials))
                .build();
    }

以下变量由环境变量加载：region、s3endpoint、bucketname、awsaccesskey和awssecretkey。