My application throws "Could not load file or assembly 'System.ValueTuple, Version=4.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies" whenever I try to send or retrieve a fax message. I am stumped and need help ASAP.

The interesting part is, the application runs fine on localhost. It fails when it is deployed on a server.