render HTML file in blocks of Theme App Extension

[-Malek]

I have a static website (HTML file)

I want to render it (include) inside a Liquid block of the Theme app extension

I used  {% render index.html %} and put my index.html in the root folder of the Theme app extension
But it did not work, it shows an error without any clue

Ps:

I tried copying the code of the HTML file inside the Liquid file but I faced many problems like: SVG causes error, img tag should have width and height, and even more problems I could not find a solution for it

If you know a way to render or inject a static site inside the theme app extension please let me know

Thank you in advance

Here is picture of my code