Did you by any chance delete a package from your server without uninstalling it first?

Hallo.

No, i havent deleted Packages or Modules.
I havent uninstalled nothink this Year.
My website is a simple Construction Site.

Sounds like a php configuration error. timezonedb is a php module. I wonder whether a relevant php.ini has been edited/upgraded incorrectly, or whether a .htaccess might be interfering. Your host could have inadvertently done this while upgrading php (although that's a long shot).

I'm assuming that the module error is the root cause of the getPackageHandle() error.

The thing is that error you are getting is a server error, not a Concrete5 error. The COncrete5 error concerning a package your host pointed at is most likely something that happens because the server is throwing errors.

The server wouldn't be throwing errors because Concrete5 would bug but the other way around is true.

That timezonedb error means PHP (the language installed on the server that is used by C5) is trying to lead an application that is already loaded.

Things you could check for are:
- is your host using an old outdated version of PHP?
- do you have multiple lines pertaining to timezonedb in your php.ini file?

Thank You.

My Host resolved the problem. Downgraded to Php 7.0.
Thank you very much.