will not run the .bat file when compiling

[EmFresh]

I have be been trying to build my program with the MSVC toolset and for whatever reason, when I press 'build' or 'build & run' the terminal tells me:

Executing task: .\build.bat <

The system cannot find the path specified.

not sure if I just missed something or what? I've tried on both 2017 and 2019 versions