Unable to consume data from broker using SASL_SSL and OAUTHBEARER mechanism

[pthalasta]

Describe the bug Consumer throws an error when started

Heartbeat failed for group my-group because it is rebalancing
Unexpected error while fetching data: UnknownError

Expected behaviour Consumer authenticates with the brokers and consumes the messages

Environment (please complete the following information):

• aiokafka version (python -c "import aiokafka; print(aiokafka.__version__)"): 0.8.0
• kafka-python version (python -c "import kafka; print(kafka.__version__)"): 2.0.2

Reproducible example followed the example consumer script and provided additional information like custom token provider, ssl_context, sasl_mechanism and security_protocol