Just get error 404s

Hi, I’m using WordPress.org 6.0 with Browser Shot (installed and activated) in a web page. On an otherwise blank page, I’ve tried all three versions of the shortcode code given in the documentation: // basic shot 600px wide [browser-shot url=” https://link-to-website” ; width=”600″] // shot with link to other website [browser-shot url=” https://link-to-website” ; width=”700″ link=” https://www.binarymoon.co.uk/”%5D // shot with caption (uses default WordPress caption styles) [browser-shot url=” https://link-to-website” ; width=”700″]Add Caption[/browser-shot]` With each, I just get an error 404. What am I missing ? As a follow-up, where would I find the images I create? Which website and where on it? When it works, am I given a link to the image ?