Update app.py

app.py

@@ -140,7 +140,7 @@ def generate_ppt(file, topic, slide_length, api_key):
         slide.shapes.title.text = title
         slide.placeholders[2].text = content
         refresh_bad_coding_practice()
-        bing_crawler = BingImageCrawler(downloader_cls=PrefixNameDownloader, storage={'root_dir': os.getcwd()})
+        bing_crawler = GoogleImageCrawler(downloader_cls=PrefixNameDownloader, storage={'root_dir': os.getcwd()})
         bing_crawler.crawl(keyword=image_query, max_num=1)
         dir_path = os.path.dirname(os.path.realpath(__file__))
         file_name = glob.glob(f"prefix_{bad_coding_practice}*")