Debugger shows correct value server-side, yet I get the safe value and a console error.

[JorgeSivil]

Debug start:

It goes to getServerSideProps() function. There I wait for some API call.

Then I get that information in my _app.js

Then it goes to the page again, to render (Note that currentLoggedInUserName is set with a value that is NOT Guest)

But when page finishes loading, I get this:

If I go to Page2 then back to Page1, I get the correct result.
What is going on?

[JorgeSivil]

So the problem is that the state is not shared with the client...

But I don't know how to overcome this

I set up useState in the App container, and it works OK server side, but then the state is not shared client side