Horizontal Bar Chart lines not visible with two BarChartDataSet in chart data

[ghost]

I am trying to show horizontal bar chart with two datasets and but when I run my code with shows the only text of lines but lines are not visible. I can see text animate but no lines.
This is my code:
chartView.noDataTextColor = .orange
chartView.chartDescription?.text = ""
let dataSet = getDataSet(budget: totalBudget, spending: totalSpend)
let chartData = BarChartData(dataSets: dataSet)
chartData.setValueTextColor(.white)
chartView.data = chartData

This is my getDataSet Method:
func getDataSet(budget: Double, spending: Double) -> [BarChartDataSet] {

    var budgetEntryList = [BarChartDataEntry]()
    let budgetEntry = BarChartDataEntry(x: budget, y: budget)
    budgetEntryList.append(budgetEntry)
    
    let budgetDataSet = BarChartDataSet(values: budgetEntryList, label: "Total Budget")
    budgetDataSet.setColor(.orange)
    
    var spendingEntryList = [BarChartDataEntry]()
    let spendEntry = BarChartDataEntry(x: spending, y: spending)
    spendingEntryList.append(spendEntry)
    
    let spendingDataSet = BarChartDataSet(values: spendingEntryList, label: "Total Spending")
    spendingDataSet.setColor(.green)
    
    return [budgetDataSet,spendingDataSet]
    
    }

[liuxuan30]

Take a look at ChartsDemo, there are examples already.