c# ML tutorial Data import malfunction

**System Information (please complete the following information):**
- Model Builder or CLI Version:
- Visual Studio Version (if applicable):17.9.2

**Describe the bug**
- On which page of the tutorial did you run into an issue (URL):
- Daten hinzufügen (Add data)
- Clear description of the problem:
- the given file (yelp.labelled.txt)was found, downloaded, unzipped, placed into the right project directory (visible in porject explorer). I opened it in the wizard and a valdi data preview was generated, labeled col0, col1.
The problem IS: Select column to predict is EMPTY, so i cannot proceed

**To Reproduce**
Steps to reproduce the behavior:
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

**Expected behavior**
A clear and concise description of what you expected to happen.
The generated column labels will be schown in the dropdown box are shown and can be selected

**Screenshots**
If applicable, add screenshots to help explain your problem.
Sorry selecting screenshot closes the EMPTY dropdown

**Additional context**
Add any other context about the problem here.

Comienza con el Model Builder Add data wizard usando yelp.labelled.txt del tutorial y confirma que la vista previa muestra col0 y col1, mientras que Select column to predict está vacío. Comprueba el flujo de selección de datos y cómo gestiona este formato de archivo. Se considera terminado cuando las columnas generadas aparecen en el menú desplegable de predicción y el tutorial puede continuar.

Escrito por el modelo de indexación a partir del texto del issue.