[BUG] Notification error 500 on clean install

[remygrandin]

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What set up are you using

• [ ] Cloud Hosted Version
• [X] Self Hosted

Describe the bug Without PHPUnit installed, a large error 500 block half the screen

To Reproduce Steps to reproduce the behavior:

1. Install on a clean ubuntu server 22.04
2. connect to leantime
3. A large error 500 in the top right corner block usage of underneath componenets

Expected behavior No error

Leantime Version 3.1.4

Server nginx

Additional context Logs show php stack trace of :

Error: Call to undefined function PHPUnit\Framework\throwException() in /opt/leantime/app/Domain/Notifications/Services/News.php:103

When installing phpunit via apt and restarting nginx, the error disapear.

phpunit should probably be listed in the required dependency of the repo readme install section