Use Render with GitHub, I think this will help you . If your image file is posted in GitHub. If you want follow this link it will help you to deploy server side in render- https://www.loom.com/share/7dd26ca96c9942ee92b7585614d19835
I had the same problem. Turns out that I had the images folder on Windows. It doesn’t matter if the images folder Is Capitlize or not.but on Render, it does matter My problem was that I had a little i in images with VS Code, but on git-hub, the images folder was capitlized. when I made all the folders the same, my images appeared.