[protobuf] Error in UDF using google protobuf

I am getting the following error when executing UDF function. Please help to resolve the issue. ts=2018-06-07T19:37:37.864Z lvl=info msg="UDF log" service=udf text="2018-06-07 19:37:37,864 INFO:root: Starting Agent" ts=2018-06-07T19:37:37.864Z lvl=info msg="UDF log" service=udf text="Traceback

[protobuf] Unable to parse using google Protobuf in Python3.5

Error log trace === ts=2018-06-04T10:08:06.672Z lvl=info msg="UDF log" service=udf text=" request.ParseFromString(body)" ts=2018-06-04T10:08:06.672Z lvl=info msg="UDF log" service=udf text="google.protobuf.message.DecodeError: Error parsing message" ts=2018-06-04T10:08:06.672Z lvl=in