Negatif UserId after Display Roblox name changed

Hello everyone, i have see a bug when i change my Display name on roblox, all script using userid make a error called “got negative userId”, when i test with a normal roblo account with no display name all worki’s fine, but when i test with my Main account with a Display name, the userid is “-2”

“-2” is the userid printed by server, and the “17…” is my print directly by console.

Any one have a solution ?

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Seems like a Guest ID of some sort?

The code would be handy to see