Update app.py

app.py

@@ -308,7 +308,7 @@ def verify_certification(df, hf_username, first_name, last_name):
   
   else:
     # Not pass yet
-    certificate = ""
+    certificate = Image.new("RGB", (100, 100), (255, 255, 255))
       
     # Add a message
     message = """