Cannot display employee's information after P2T

Hi,

yesterday, a P2T was performed in test environment.
Today, after notification of the completion of the copy of the production environment on test, I logged in with admin users to check if the platform was working properly.
In test environment, I found a bug, which was present on all pages (e.g. change manager, change assignment, global search bar...). Because, for example, if I search for an employee from the global search bar, and click, on the name of the employee, to access on his information (Public Info page), I'm redirected to a blank pages with no possibility to see information about