That doesn't work, it's just that it has no votes... Lowest technically possible is 1 star (I haven't found one and did not search)
Side comment : I'm very frustrated with people who 5-star everything. Mangago rates from dislike (1 star) to masterpiece (5 stars) and the it's ok vote is 2 stars. A 3 or 4-stars vote is already a good score, so please keep the 5 stars for actual masterpieces...
Side comment to the side comment : I went to see how many people 5-star-ed Boku no Pico (long story short, back in 2017 everyone was stuck as Anon for a while and somehow we were stuck commenting on BnP's page, don't ask, it was weird), and it appears it's been shadow-banned? Weird and good riddance too
Lol makes sense that this doesn’t count. Also I didn’t even know Boku no Pedo was on this site lmfaooo
I remember people asking about the lowest rated stuff on this site, what can be lower than zero stars:
https://www.mangago.zone/read-manga/tales_of_symphonia_comic_anthology/