Laravel POST Method always redirect to root url after set up reverse proxy

Question

So i have project using laravel and running well. After that, i setting reverse proxy with subdomain and i test all post method in my project, but always redirect to root url not redirect to some page i want.

Here for example:

root url : www.example.com
list employee url : www.apps.example.com/employee/list
form add new employee url www.apps.example.com/employee/new
post url: www.apps.example.com/employee/insert_new/ -> redirect to www.example.com not www.apps.example.com/employee/list