Wordpress Website Site Crashed Offline \"Internal Server Error\" URGENT Troubleshooting

My website suddenly went offline. My site runs an up to date core version of WordPress, on GoDaddy. This for the public section of my website only. The members section and store are fine. I get this message when I try to load my site: Server error The website encountered an error while retrieving http://********* It may be down for maintenance or configured incorrectly. Here are some suggestions: Reload this webpage later. HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request. GoDaddy advised a 500 error will be a generic error that you will need to review the error logs to find the real error you can then troubleshoot. You can find error logs in the /var/log directory using SSH. All files seem to be in place, but I can not figure out why my site is down. Just hours prior to the crash I hired a web developer via Freelancer on a project to change my members website from one server to another server, with a content backup and more tasks. I advised him of this message, but he stated he is not a server or linux administrator, but a developer understand coding issues. He was not able to assist. A possible change into the ftp is also needed. This may require SSH and user configuration on a Linux server. You will also need to instruct me/provide steps to reconfigure it again if needed. I need it fixed immediately.