Failed to complete test myMLApp project

**System Information (please complete the following information):**
- Model Builder or CLI Version: 2022 v.17.18.0
- Visual Studio Version (if applicable): 2022/2026 Community

**Describe the bug**
- On which page of the tutorial did you run into an issue (URL): https://dotnet.microsoft.com/en-us/learn/ml-dotnet/get-started-tutorial/train
- Clear description of the problem: Not able to train the model on the data set for a prediction as described in the URL above.

**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. I expected the data to be used to train the model

**Screenshots**
If applicable, add screenshots to help explain your problem.

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

Start by opening the linked training tutorial and reproducing the failure in the reported Model Builder or CLI version, recording the exact error shown in the screenshots. Trace the training step from the tutorial through the project and identify the cause; done means the sample data trains successfully as described.

Scritto dal modello di indicizzazione a partire dal testo della issue.