[Bug] Unpivot Settings causes a gray screen in Model

Hi Pyramid Team,

I can reproduce a UI crash in Model when opening the settings window for an Unpivot node.

Scenario:

ClickHouse > Table > Unpivot

Steps to reproduce:

1. Create a new model.

2. Add a ClickHouse source.

3. Select a table from the ClickHouse source.

4. Add an Unpivot node after the Table node.

5. Select the Unpivot node.

6. Click Settings in the Unpivot properties panel.

1.

 2.

 Expected result:

The Unpivot settings window opens and I can configure the node.

Actual result:

The settings window starts loading, then the whole Model screen turns gray. The interface does not recover. The only way to continue working is to refresh the browser page.

The issue is reproduced when clicking Settings for the Unpivot node. I will attach screenshots showing the model flow before clicking Settings and the gray screen after clicking it.

Source type: ClickHouse
Flow: ClickHouse > Table > Unpivot
Pyramid version: 2025.10.005

Thanks