NextJs Auth0 Login/Logout have flash bug

Sorry, i am not sure with how to say the title.

So, i build Nextjs + Auth0 login.
Its works like charm.

But, there is an super fast error message saying […auth0].js not found!

Screenshot 2021-10-15 190545|690x375
But its only like 2-3 seconds and then redirect to Auth0 Login.

Its happen also when i do Logout.
Here is the console log

Hey there!

Can you share a link to the doc / quickstart SDK you are using in your implementation? Thank you!