Update app.py

app.py

@@ -98,10 +98,12 @@ def copy_font_style(original_run, new_run):
 
 def process_pptx(pptx_file):
     images_dir_path = "images"
-    output_dir = 'rendered_png'  # Directory to save the rendered images
+    output_dir = "rendered_png"  # Directory to save the rendered images
     if not os.path.exists(images_dir_path):
         os.makedirs(images_dir_path)
-    json_output, image_paths = transfer_to_structure(pptx_file.name, images_dir_path)
+    if not os.path.exists(output_dir):
+        os.makedirs(output_dir)
+    json_output, image_paths = transfer_to_structure(pptx_file, images_dir_path)
 
     images, slide_dimensions = pptx_to_images(pptx_file)
     rendered_image_path = render_images_with_skia(images, slide_dimensions, output_dir)