Update app.py

app.py

@@ -437,7 +437,7 @@ def issue_tokens(send,rec,amount):
     print (mes)
     
     if p==False:
-        return (mes, p, {}, {}, {}, {}, {},  {},  {}, {}, {}, {},{})
+        return (mes, p, None, None, None, None, None,  None,  None, None, None, None,None)
     if p==True: