Update app.py

app.py

@@ -1488,7 +1488,7 @@ def main(input_path, api_name=None, api_key=None, num_speakers=2, whisper_model=
                             requests.status_code = "Connection: "
                     elif api_name.lower() == "huggingface":
                         huggingface_api_key = os.environ.get(HF_TOKEN)
-                        if huggingface_api_key is = None:
+                        if huggingface_api_key is == None:
                             huggingface_api_key = api_key if api_key else config.get('API', 'huggingface_api_key', fallback=None)
                         try:
                             logging.debug(f"MAIN: Trying to summarize with huggingface")