When you go to https://sky.lea.moe/stats/Kefir101Awesome/Apple
it is an example of this. I only noticed this because it was causing problems in my own application for creating a guild slayer xp leaderboard. Maybe check to see if the profile is actually an unaccepted coop invite before adding it to the list and processing it.
Unfortunately I'd have to send a request for each profile for that, I did add some checks for a somewhat clearer error message though. Fixing this is on Hypixel.
When you go to https://sky.lea.moe/stats/Kefir101Awesome/Apple it is an example of this. I only noticed this because it was causing problems in my own application for creating a guild slayer xp leaderboard. Maybe check to see if the profile is actually an unaccepted coop invite before adding it to the list and processing it.