TypeError undefined is not an object (evaluating 'value.replace')

The strange thing is that it works on my web browser when I run it on Firefox using the Metro Bundler, but when I try to do it on an Android phone I get the error: TypeError undefined is not an object (evaluating 'value.replace')

const setMyString = (value) => {    let string = value.replace(/\D/g,'');    setString(string);}

It seems that this function sets the error.

const [myString, setString] = useState('');<Input       value={myString}    onChange={e => setMyString(e.target.value)} />

Here's the rest of the relevant code. The error happens when I use the virtual keyboard and enter a number.