The url parameter that is passed to the to method cannot be set to the value . It must be of type string.
Please add the url, the output you get in the developer console and also tell us if you are in Preview or Published mode.
I am in preview mode
please explain me more carefully
Hi,
Can you please share with us the code you’ve written and a screenshot of the issue?
Please provide us as many details as possible so that we can be able to assist you 
Thanks!
Tal.
After I log in and update my profile , it doesn’t update
Only after refreshing it works well.
I don’t know what bug is.
please look at this video
https://www.youtube.com/watch?v=Orl8GJNzG5s
I followed this tutorial , but I can’t update my profile immediately as well as tutorial , only I can update with refreshing
Do you understand what I mean?
Hi , Tal.
please ping me when you are available