update app.py

app.py

@@ -479,11 +479,12 @@ if main_selection:
         st.write(f"Dataset ID: {sub_selection}")
         dataset_id = sub_selection
 
-        # Print default scale for the selected dataset
+        # Fetch the default scale for the selected dataset
         try:
             collection = ee.ImageCollection(dataset_id)
             first_image = collection.first()
-            default_scale = first_image.projection().nominalScale().getInfo()
+            # Select the first band to avoid issues with multiple projections
+            default_scale = first_image.select(0).projection().nominalScale().getInfo()
             st.write(f"Default Scale for Selected Dataset: {default_scale} meters")
         except Exception as e:
             st.error(f"Error fetching default scale: {str(e)}")