I have this Data URI that it's fetched dinamically in my server, along with the filename, but when I click on the anchor element it gives me the "Not allowed to navigate top frame to data URL" and upon searching about it none of the code provided works. The thing is it works here in this snippet below. I can confirm with Inspect Element that on my page both the URI and the download attribute are being set one second after the page loads. I'm on Chrome 79.0.3945.130.
<a href="data:image/png;base64,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" download="image.png">Download</a>