Just installed Evoq content basic 8.1.0 on our server, and doing a basic setup.  It is a blank install and still using the default theme. 

I went into the page settings of the home page and unchecked "include in menu?"  Now almost everything returns a 500 internal server error.  I can still browse to the pages I've created like example.com/about-us, and even going to example.com/home works.  At first, I could go back to page settings, and even though i would get the error, I could click through it and add it back to the menu. This would fix it.  However, I was showing a coworker and forgot to change it back, now my session is expired and I can't get logged back in to fix it.