How do I even A. Explain it, like how to reproduce it? I know nothing about this other then Its happening… And B. Make a post as I’m Just a Member and not a regular
Very good question. You can report this to higher ranks and wait
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Hoping we get a response from an admin soon, too many weapons in my game rely on animations for this to be persisting!
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Yes me too. I have no clue what this error is from. Unlike other errors Mine doesn’t have an AssetID to go off of and its very annoying because I have no clue whats wrong.
do you have any code to show, for any animations in your place
Considering that my game has 16 thousand lines of code because it is a big project, and the error doesn’t mention where it coming from (like doesn’t mention a script) I have no idea where it coming from.
By doing a classname=Animation search, all My animations are valid animations with AssetIds.
can you ctrl+shift+F to try to find the word “Animation” in scripts? or similar words?
I don’t usually use the word “Animation” when referring to animations within my script. When looking for :LoadAnimation. Everything appears to be normal, and function normally. I don’t notice a difference in my game other then these errors.
ive seen multiple posts today with a “sanitized id animation error” so it may be a roblox issue. thats very strange
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It just happened to me as well, let’s hope someone either finds a fix or Roblox pushes a new update.
Restarting studio or re-uploading animations seems to work for some people
I’ve had this happen aswell and found a fix. If you’re storing the animation object inside ReplicatedStorage, try storing it directly inside the character model instead. For some reason if you reference the animation object when it’s inside ReplicatedStorage it gives you the error. Apparently it’s a network issue but I couldn’t find more info on it.
I don’t store my Animations in replicated storage for the most part. I use Custom rigs and folders when sorting, so It doesn’t really help me, but thanlks for your reply!
Where do you store those folders?
Many different spots. Mainly inside the rig that uses those animations. The game I’m working on is a animation Heavy game, so there is lots of animations. The rig that uses the animations often has a folder called “Animations” inside the Rig model where my scripts can access them
I’d try to look for those animations that aren’t directly stored in the rig and move them, if there are any. Hopefully Roblox fixes this soon though.
This method worked for me.
I have no idea how or why did the ASSET ID changed, but after checking at
[https://create.roblox.com/dashboard]
Copy the new assetid and use it, it worked for me
That’s great an all… but how am I suppose to change 100s of animations at a time lol… I’ll see if it works but it’s gonna take a bit
I haven’t yet seen a better solution, but this one helped me. 
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Unable to verify… but I have done most of them and nothing has changed