Add some debug logging

rpi/services/mqtt_service.py

@@ -67,6 +67,7 @@ class MQTTService:
 
     def publish(self, topic: str, data: str, qos: int = 0):
         try:
+            print("Trying to publish...")
             self.connect()
             payload = {
                 "timestamp": int(time.time()),
@@ -90,6 +91,7 @@ class MQTTService:
 
             self.client.on_message = on_message
             self.client.subscribe(topic, qos=qos)
+            print("Subscribed to " + topic)
         except Exception as e:
             print(f"An error occurred while trying to subscribe to {topic} on {self.address} : {e}")