Update app.py

app.py

@@ -213,7 +213,8 @@ if uploaded_file is not None:
     data, wcs = load_file(uploaded_file)
     os.system(f'mkdir -p {uploaded_file.name.strip(".fits")}')
 
-if example is not None:
+if example:
+    uploaded_file.name = "NGC4649_example.fits"
     data, wcs = load_file("NGC4649_example.fits")
 
 if "data" not in locals():