PDF not rendered in iOs

[devartstudio]

Hello
I'm using IONIC with angular:
"@angular/core": "~16.2.6",
"ng2-pdf-viewer": "^9.1.5",
I tried too
"ng2-pdf-viewer": "^10.4.0"
Into the iOs devices the PDF is not rendered, it work fine in Browser, and Android.

In safarai, using the browser version, the pdf is correct rendered:

using the device, the tag .pdf-viewer is empty:

Any suggestion?

Thanks for your help.