Being an nopCommerce MVP (AKA nopmvp) myself, if often see people asking, repeatedly, about the similar questions. These questions are related to nopCommerce / C# exceptions, and can actually be solved relatively easilly if you know what the error messages mean. Unfortunately, many developers are not trained to properly read C# and ASP.Net exceptions and make sense of them.
So, in this blog post, I'll try to lay out a few common exceptions that nopCommerce developers face, and provide insight on each of them.