Getting the error:
Stumbled on an interesting new feature based on a commit in the AWS .net SDK which may have been released early.
I am working on a project with the STM32F103C8 and I not using a dev board but rather a breakout board called SMT Test Socket TQFP-48 Breakout AKA NO. SA248 XELTEK
Tomu is a USB chip with capacitive sense buttons that fits inside a USB port and has a ARM EFM32HG309 MCU and a few LEDs inside.