Python+Flash. Direct links in img src not loading. How to fix?

Question

Python

Hello.
I sketched a script for flask and an html script for it
. The template has an img tag where a link to the image from the script is passed to src.
In the template:
<img src="{{ score[2] }}" height="200px">
In the browser we get:

<img src="https://pp.userapi.com/c4946/u299074/-6/y_a7ba6cd3.jpg" height="200px">

The browser says it was not possible to load the image, if you just scorpion and open the link, then everything is OK, it opens.
How to fix it? Why does not display if everything is there?
thanks in advance