Unable to edit the "customize" section and the "widget" section is populating unknown code

My WordPress site is experiencing some major issues. I am getting a 500 server error when attempting to change the "customize" side bar, and the "widget" section is acting really weird (populating many weird unknown codes :/

Topic content-width 500-internal-error widgets customization Wordpress

Category Web

About

Geeks Mental is a community that publishes articles and tutorials about Web, Android, Data Science, new techniques and Linux security.