iOS Blueprint only, can't launch

Hi,

I’m running in a very problematic issue launching on iOS from Windows. I have a project, developped in Blueprint only, with absolutely no C++ file and no third-party plugin. I have valid certificates and provisions, but I still can’t launch on an iPhone 7 under iOS 10.
It keeps stopping with an error 5.
Failed to start local process for action (“Cannot start process because a file name has not been provided.”): -o BatchMode=yes ${CURRENT_USER}@ “cd "/" && xcode-select --print-path”