It looks like a duplicate of old issue https://github.com/localstack/localstack/issues/78
But now it's reproducible for me with the latest version of LocalStack. 
if action == 'GetQueueAttributes':
            content_str = self._add_queue_attributes(path, req_data, content_str, headers)
        
        if action in ('CreateQueue', 'GetQueueUrl', 'ListQueues', 'GetQueueAttributes'):
            if config.USE_SSL and '<QueueUrl>http://' in content_str:
                
                content_str = re.sub(r'<QueueUrl>\s*http://', r'<QueueUrl>https://', content_str)
            
            external_port = SQS_PORT_EXTERNAL or get_external_port(headers, request_handler)
            content_str = re.sub(r'<QueueUrl>\s*([a-z]+)://[^<]*:([0-9]+)/([^<]*)\s*</QueueUrl>',
                r'<QueueUrl>\1://%s:%s/\3</QueueUrl>' % (HOSTNAME_EXTERNAL, external_port), content_str)
            
            content_str = re.sub(r'<([a-zA-Z0-9]+)>\s*arn:aws:sqs:elasticmq:([^<]+)</([a-zA-Z0-9]+)>',
                r'<\1>arn:aws:sqs:%s:\2</\3>' % (region_name), content_str)
        if content_str_original != content_str:
            
            new_response = Response()
            new_response.status_code = response.status_code
            new_response.headers = response.headers
            new_response._content = content_str
            new_response.headers['content-length'] = len(new_response._content)
            return new_response
        
        
        if action == 'TagQueue':
            new_response = Response()
            new_response.status_code = 200
            new_response._content = ("""
                <?xml version="1.0"?>