### Bug report when the color of the borderBottom is commented ``` "borderBottom": { //"color": "black", ``` js error when color is not applied to a cell border in the Spreadsheet and trying to export to PDF. kendo.all.js:61278 Uncaught TypeError: e.transform is not a function ### Reproduction of the problem 1. Run the following Dojo - https://dojo.telerik.com/@Dimitar-Goshev/EpIqElEl 1. Export to PDF ### Current behavior JS error - e.transform is not a function ### Expected/desired behavior The data is exported correctly ### Environment * **Kendo UI version**: 2022.3.913 * **Browser**: all