Guard against empty node descriptors

Author: Adminiuga

custom_components/zha_map/neighbour.py

@@ -61,7 +61,10 @@ def _update_info(self):
         self.nwk = "0x{:04x}".format(self.device.nwk)
         self.model = self.device.model
         self.manufacturer = self.device.manufacturer
-        self.device_type = self.device.node_desc.logical_type.name
+        if self.device.node_desc.is_valid:
+            self.device_type = self.device.node_desc.logical_type.name
+        else:
+            self.device_type = "unknown"
 
     @classmethod
     async def scan_device(cls, device):