FormatAllFilesCommand is not executable on Wix Toolset project

[Erroneous1]

In Visual Studio 2017 when running Format All Files on entire solution with a Wix Toolset project or on the Wix project, I get the following error:

FormatAllFilesCommand is not executable.

System.Runtime.InteropServices.COMException: Member not found. (Exception from HRESULT: 0x80020003 (DISP_E_MEMBERNOTFOUND)).

Is there a way to exclude a project or entire directories from being formatted? I added the name of the folder that contains the Wix project but that didn't work.