print html with my data in another page

My data:
/hello.html
`

hello

`
and print page /print.html

```
window.printPdfBase64 = function () {
fetch('hello.html').then(function (response) {
response.text().then(function (mydata) {
printJS({
printable: mydata,
type: 'html'
})
})
})
}
```

But it dont work
help me :(

Start by reproducing the example using hello.html and print.html, then trace the window.printPdfBase64 function through the fetch response and the printJS call. Compare the fetched HTML with the input expected by printJS, and consider the issue complete only when the requested HTML prints or the exact limitation and required usage are documented.

Written by the indexing model from the issue text.