Spread the gradio_client token keyword rather than shadowing the client factory

app.py

@@ -11,6 +11,9 @@ from pyharp import *
 from gradio_client import Client, handle_file
 
 
+_TOKEN_ARG = ("token" if "token" in inspect.signature(Client.__init__).parameters
+              else "hf_token")
+
 _BACKEND_SPACE = "facebook/MelodyFlow"
 _BACKEND_API_NAME = "/predict"
 _BACKEND_TOKEN_ENV = "HF_TOKEN"
@@ -29,7 +32,7 @@ def _backend_client():
     global _client
     if _client is None:
         _token = os.environ.get(_BACKEND_TOKEN_ENV) or None
-        _client = _backend_client(_BACKEND_SPACE, _token)
+        _client = Client(_BACKEND_SPACE, **{_TOKEN_ARG: _token})
     return _client
 
 
@@ -43,7 +46,7 @@ def _reset_client():
 def _make_conn(tok):
     tok = (tok or '').strip()
     if tok:
-        return _backend_client(_BACKEND_SPACE, tok)
+        return Client(_BACKEND_SPACE, **{_TOKEN_ARG: tok})
     return _backend_client()