img tag is not working correctly

When I insert an <img> tag with my image's 'src' into Franz's message, the image becomes a blank space, and the 'src' is replaced with a different one.
(For example, this one:

https://cdn.omlet.com/images/originals/breed_abyssinian_cat.jpg

→ https://play.fables.gg/vc-ap-1b2676/_next/image?url=https%3A%2F%2Fcdn.omlet.com%2Fimages%2Foriginals%2Fbreed_abyssinian_cat.jpg&w=1080&q=75 )
When I open this link, I get the error:
400: BAD_REQUEST
Code: INVALID_IMAGE_OPTIMIZE_REQUEST
ID: fra1::hpdf2-1766199007445-483ff2c49718

(google translate)