Hey, I was just trying to link to some locally hosted images in one of my posts and saw that none of them was working.
In this case the problem was, that I host some images I linked to in my posts on the same server at another subdomain. This tripped the is_valid_url check / SSRF protection.
My temporary workaround is, to set "debug = true" in my profile.toml.
Same problem here, I guess: https://social.manualdousuario.net/
I’ll try your workaround.