Set the namespace uri to http://lofar.eu

Femto-DS/Femto.py

@@ -104,7 +104,7 @@ class Femto(Device):
             self.client.connect()
             self.client.load_type_definitions()
             objects = self.client.get_objects_node()
-            idx = self.client.get_namespace_index(DEFAULT_URI)
+            idx = self.client.get_namespace_index("http://lofar.eu")
 
             # Now getting a variable node using its browse path
             self.opc_obj = self.client.get_root_node().get_child(["0:Objects",