"there should be 'testing a new project_data' folder next to the executable"

It says

"there should be 'testing a new project_data' folder next to the executable"

I’ve got it downloaded 3 files:

  • UnityPlayer.dll,
  • Testing a new project_Data
  • UnityCrashHandler64.

I’m new on this game dev thing, so I hope someone can help me ?