vaadin session quit unexpectedly.unexpectedly returns to login view.what problem could it be?

Tanks you

Hard to tell without more details. Do you have the issue on a server, on your computer…?

the project is on an amazon linux centos server and java 17, on some machines it works fine, on others it doesn’t.
create the project on the example of https://start.vaadin.com/

a view is being worked on normally and unexpectedly sends it to login

Server logs could contain more information

the server log does not show any anomaly

I think I found the problem, I have two applications, one on port 8080 and the other on port 8081, when I open both in the same browser, one session me out and returns to login, how can I fix it? thanks

Apply the changes suffered and apparently the application is stable. thanks for your help