Excel error

Here's an example. My Excel spreadsheet looks like this,

And here's JavaScript code to read and open the URLs in Chrome and Edge,

function TestWeb()
{
    var excelFile = Excel.Open("C:\\temp\\Websites.xlsx");
    var excelSheet = excelFile.SheetByTitle("Websites");
    var rows = excelSheet.RowCount;
    var cols = excelSheet.ColumnCount;
    Log.Message("Rows: " + rows);
    Log.Message("Columns: " + cols);
    
    var browsers = ["chrome", "edge"];
    
    for (var x = 1; x <= rows; x++) {
        for (var y = 2; y <= cols; y++) {
            var url = excelSheet.Cell(y, x).Value
            Log.Message(url);
            
            for (var k = 0; k < browsers.length; k++) {
                Browsers.Item(browsers[k]).Run(url);
                var page = Sys.Browser(browsers[k]).Page("*");
            }
        }
    }
}

Make sure you fully understand what the code is doing, and how it's written, including layout.