Update inference_flask.py

inference_flask.py

@@ -51,7 +51,7 @@ def load_model():
         print('Downloading VGG!')
         url = model_urls['vgg16_bn']
         r = requests.get(url, allow_redirects=True)
-        with open(model_paths['vgg16_bn'], 'w') as f:
+        with open(model_paths['vgg16_bn'], 'wb') as f:
             f.write(r.content)
         print('Finished Downloading')
     parser = argparse.ArgumentParser('P2PNet evaluation script', parents=[get_args_parser()])