"json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)" when running example avro producer

[cowellrj]

Description

Running MacOS, Python3.6.5
Installed packages with
pip install confluent-kafka
pip install confluent-kafka[avro]

run the example avro producer script from https://github.com/confluentinc/confluent-kafka-python/blob/master/README.md having edited for my broker, schema registry and topic name.

error stack is :
Traceback (most recent call last):
File "/Users/07HO38/Documents/Python/OEHCS/kafka_produce_avro.py", line 43, in
avroProducer.produce(topic='idcs-5bea815f69d54c6daa5701a57b5914fa-JDBCUSERS', value=value, key=key)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/confluent_kafka/avro/init.py", line 80, in produce
value = self._serializer.encode_record_with_schema(topic, value_schema, value)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/confluent_kafka/avro/serializer/message_serializer.py", line 98, in encode_record_with_schema
schema_id = self.registry_client.register(subject, schema)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/confluent_kafka/avro/cached_schema_registry_client.py", line 141, in register
result, code = self._send_request(url, method='POST', body=body)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/confluent_kafka/avro/cached_schema_registry_client.py", line 97, in _send_request
return response.json(), response.status_code
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/models.py", line 892, in json
return complexjson.loads(self.text, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/json/init.py", line 354, in loads
return _default_decoder.decode(s)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/json/decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/json/decoder.py", line 357, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

How to reproduce

As above

Checklist

Please provide the following information:

• confluent-kafka-python and librdkafka version (confluent_kafka.version() and confluent_kafka.libversion()): 0.11.6', 722432 and ('0.11.6', 722687)
• Apache Kafka broker version: 1.1.0.0.10
• Client configuration: {...}
• Operating system: Broker is on Oracle Enterprise Linux 6, Python on MacOS 10.13.6
• Provide client logs (with 'debug': '..' as necessary)
• Provide broker log excerpts
• Critical issue

[rnpridgeon]

This should be fixed with #440

There are a few http actions which are not handled by the Schema Registry application but instead by the underlying web server implementation (Jetty). When this happens the response will not be encoded in JSON causing the exception you see here.

[ADDale]

I am still getting the same issue. Can you please share working code for the same