UsinguseReactToPrint error: "there is nothing to print"

[David123]

This function:
const reactToPrintFn = useReactToPrint({
contentRef: () => filtersRef.current,
pageStyle: () => `
size: A4 portrait;
margin: 0.25in;
-webkit-print-color-adjust: exact;
`
}); gives this error: ['There is nothing to print']. I have this <button onClick={()=>reactToPrintFn()}>Print now</button><div ref={filtersRef} > stuff to print here</div>