Why is imgur returning 403 when inserting images via?

Question

Flask

On imgur I have an image uploaded via API. When I open it in the browser, I can easily see it, but when I paste it through:, I get a 403 error.<img src="https://i.imgur.com/BeM62Ux.jpg">

Failed to load resource: the server responded with a status of 403()

At the same time, it is important to note that I use flask and only with it the picture is not displayed, when I create a regular html document, it is loaded.

PS Pictures that were not uploaded via the API are also not displayed