[fix error]

app.py

@@ -25,11 +25,11 @@ if not os.path.exists(expected_model_path):
     copyfile(model_path, expected_model_path)
 
 def reflection_removal(input_image):
-    if not input_image.name.endswith((".jpg", ".jpeg", ".png")):
-        return "FIle is not supported (only .jpg, .jpeg, .png)."
+    if not input_image.lower().endswith((".jpg", ".jpeg", ".png")):
+        return "File is not supported (only .jpg, .jpeg, .png)."
     
-    file_path = os.path.join(UPLOAD_DIR, os.path.basename(input_image.name))
-    shutil.copy(input_image.name, file_path)
+    file_path = os.path.join(UPLOAD_DIR, os.path.basename(input_image))
+    shutil.copy(input_image, file_path)
     
     cmd = [
         "python", "test.py",