I'm currently going through the Sitecore® 9.0 Platform Essentials for Developers eLearning course and I think I must've done something wrong when setting up the solution, although I'm not sure what. I used the powershell installer to get the site up and running (verified it works), and followed the PDF from the course to get the solution running in visual studio. However, I just made my first template and when I did a Site Publish, I've started getting this error. SitecoreRocks is blowing up too.
My bin folder has a ton of Sitecore DLLs, so I don't think there's one missing, but I also feel like that's the most obvious thing that I'm missing. Any insight?