Update app.py

app.py

@@ -323,8 +323,9 @@ def verify_certification(df, hf_username, first_name, last_name):
   
   else:
     # Not pass yet
-    certificate, pdf = generate_certificate(Image.new("RGB", (100, 100), (255, 255, 255)), first_name, last_name)
-      
+    certificate = Image.new("RGB", (100, 100), (255, 255, 255))
+    pdf = "./fail.pdf"
+          
     # Add a message
     message = """
     You didn't pass the minimum of 80% of the hands-on to get a certificate of completion. But don't be discouraged! \n