new check for token2

app.py

@@ -7,6 +7,7 @@ from author_leaderboard_tab import author_leaderboard_tab
 from pr_paper_central_tab import pr_paper_central_tab
 from huggingface_hub import whoami
 import json
+import requests
 
 from author_leaderboard_contrib_tab import author_resource_leaderboard_tab
 from zoneinfo import ZoneInfo  # Available in Python 3.9 and later
@@ -16,15 +17,23 @@ paper_central_df = PaperCentral()
 
 
 def hide_if_logged_in(oauth_token: Optional[gr.OAuthToken]):
-    if oauth_token is None or oauth_token.token is None:
+    if oauth_token is None:
+        return gr.update(visible=True)
+    try:
+        whoami(oauth_token.token)
+        return gr.update(visible=False)
+    except requests.exceptions.HTTPError as e:
         return gr.update(visible=True)
-    return gr.update(visible=False)
 
 
 def display_user_info(oauth_token: Optional[gr.OAuthToken]):
-    if oauth_token is None or oauth_token.token is None:
+    if oauth_token is None:
+        return ""
+    try:
+        user_info = whoami(oauth_token.token)
+    except requests.exceptions.HTTPError as e:
+        print(e)
         return ""
-    user_info = whoami(oauth_token.token)
     avatar_url = user_info.get("avatarUrl", "")
     fullname = user_info.get("fullname", "")
     name = user_info.get("name", "")