CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\):
  Data directory referenced by argument

    DATA{Directory5/}

  corresponds to source tree path

    Directory5

  that does not exist as a directory!
Call Stack \(most recent call first\):
  .*
  Directory5\.cmake:[0-9]+ \(ExternalData_Add_Test\)
  CMakeLists\.txt:[0-9]+ \(include\)