Questions on KendoReact Forum

Warning: React does not recognize the `firstDate` prop on a DOM element. If you intentionally want it to appear in the DOM as a custom attribute, spell it as lowercase `firstdate` instead. If you accidentally passed it from a parent component, remove it from the DOM element.
    in td (created by CalendarWeekCell)
    in CalendarWeekCell (created by View)

with this simple code :

<div>
<DatePicker
    name="OperationDate" className="OperationDate"
    defaultValue={fromData.Date}
    format="dd/MM/yyyy"
    width={116}
    tabIndex={8}
    weekNumber={true}
    weekCell={CustomWeekCell}
    onChange={this.handleChange}
    {...this.props} />
</div>

I defined this const to resolve this issue :

const CustomWeekCell = ({ 
    FirstDate, 
    ...props}) => <CalendarWeekCell {...props} />

But it's no effect

a part of my package.json below :

"@progress/kendo-data-query": "^1.5.5",
"@progress/kendo-drawing": "^1.10.1",
"@progress/kendo-licensing": "^1.1.4",
"@progress/kendo-react-animation": "^4.7.0",
"@progress/kendo-react-buttons": "^4.7.0",
"@progress/kendo-react-data-tools": "^4.7.0",
"@progress/kendo-react-dateinputs": "^4.7.0",
"@progress/kendo-react-dropdowns": "^4.7.0",
"@progress/kendo-react-excel-export": "^4.7.0",
"@progress/kendo-react-grid": "^4.7.0",
"@progress/kendo-react-inputs": "^4.7.0",
"@progress/kendo-react-intl": "^4.7.0",
"@progress/kendo-react-layout": "^4.7.0",
"@progress/kendo-react-pdf": "^4.7.0",
"@progress/kendo-react-tooltip": "^4.7.0",

Do you known how resolve this issue (it's a big warning in my JS console) ?

Thank you