Fix "Failed to send Kafka message: microservice name is empty" Error in Sensorconnect

If you're using version v0.9.11 of the United Manufacturing Hub and encounter the error message "Failed to send Kafka message: microservice name is empty" while using the Sensorconnect microservice, don't worry!

{"log.level":"error","@timestamp":"2023-02-21T14:40:04.652Z","log.origin":{"file.name":"internal/kafkaMessageTrace.go","file.line":25},"message":"SerialNumber is empty","ecs.version":"1.6.0"}
{"log.level":"error","@timestamp":"2023-02-21T14:40:04.652Z","log.origin":{"file.name":"sensorconnect/kafka.go","file.line":43},"message":"Failed to send Kafka message: microservice name is empty","ecs.version":"1.6.0"}

This error is caused by a bug on our side and is fixed in the later versions of the Hub. However, if you want to continue using v0.9.11 and need a quick fix for the issue, follow the step-by-step instructions below to resolve the error.

Instructions

1. Open UMHLens / OpenLens
2. Go to StatefulSets and then press on the united-manufacturing-hub-sensorconnect StatefulSet
3. Press Edit on the top right
4. Press Ctrl + F and search for env:
5. The second result should be the correct one. Add a new environment variable:

   - name: SERIAL_NUMBER
     value: default
   

6. Press Save