https://www.dropbox.com/s/raw/q6ckhwos45jires/version-doggytalents.json
This url is no longer valid now, or, at least, inaccessible to public. It just shows 404 to me. and forge is also unable to access the json.
It prints out this html during startup
html.txt
Which is, dropbox's 404 page
It is discovered in mods.toml file of 1.18.x branch

The url works as of now