Update app.py

app.py

@@ -4,7 +4,7 @@ def greet(name):
     return "Hello " + name + "!!"
 
 
-def hello(profile: gr.OAuthProfile | None) -> str:
+def hello(profile: gr.OAuthProfile | None):
     if profile is None:
         return gr.Markdown(
             '# ePub summarization tool  '
@@ -17,9 +17,9 @@ def hello(profile: gr.OAuthProfile | None) -> str:
 
 
 with gr.Blocks() as demo:
-    gr.Blocks().attach_load_event(hello, None)
-    if gr.OAuthProfile is None:
+    hello()
+    with gr.Row():
         gr.LoginButton()
-    else:
-        gr.LogoutButton()
+        if gr.OAuthProfile is not None:
+            gr.LogoutButton()
 demo.launch()