Error with timezone

Hi! I have been developing since a few weeks with Scriptcase locally and all fine. I deployed my work to a server and now I get an error on a form:

The Upload feature requires the Timezone extension enabled in the PHP.

I use PHP 7.2 on the server. I changed in the development the timezone in the settings and deployed all applications again (not the libraries etc).

What do I do wrong? How to get rid of this error?