I have a site that runs on dnn 5.6.2. I need to upgrade it to 7.1.1. The way I tried is I created a fresh instance of DNN 7.1.1 in my system. Then I copied the files from my solution to the DNN 7 site and made it compilable on by one. But when I tried to upgrade the database, I get the following error. Any idea on this issue. Also, is my approach correct.