Return 404 for invalid images

[b00f]

Some image link doesn't produce 404 error. For example, click here: https://pactus.org/images/pactus-blog-post-default.jpg
Ideally can we redirect:

https://pactus.org/images/pactus-blog-post-default.jpg
to
https://pactus.org/images/pactus-blog-post-default.webp