fix pb with label dict

app.py

@@ -25,10 +25,11 @@ if __name__ == '__main__':
 
     # get the dict file
     label_dict_file = hf_hub_download(repo_id=model_path, filename="label_dict.json")
-    
+
     global label_dict
     with open(label_dict_file, "r") as f:
-        label_dict = json.load(f)
+        content = f.read()
+    label_dict = json.loads(content)
 
     # gradio specific to create an IHM
     iface = gr.Interface(