fix

app.py

@@ -122,12 +122,12 @@ def add_indices(image, nir_band, red_band, blue_band):
 
 def process_date(daterange, satellite, veg_indices):
     start_date, end_date = daterange
+    daterange_str = daterange_dates_to_str(start_date, end_date)
     prefix = f"Processing {satellite} - {daterange_str}"
     try:
         attrs = satellites[satellite]
         collection = attrs["collection"]
         collection = collection.filterBounds(buffer_ee_geometry)
-        daterange_str = daterange_dates_to_str(start_date, end_date)
         collection = collection.filterDate(start_date, end_date)
         
         bucket = {}