Is Civi compatible with Wordpress5.0? *SOLVED*
****SOLVED****

The issue is caused by the Civi-Calendar extension. I have contacted the developers about it and asked them to upgrade their extension to make it compatible with civi 5.8. The below files caused specific problems and were disabled.

public_html/wp-content/uploads/civicrm/custom/custom_php/CRM/Core/SelectValues.php

Breaks the Add Relationships function. 
Breaks the search box on the top left corner.

public_html/wp-content/uploads/civicrm/custom/custom_php/CRM/Core/Event/BAO/Event.php

Breaks page: Events > Manage Events Result Error 500