When I try to login to minecraft on my main account, it wont let me log into any multiplayer servers, I have just migrated my account to a microsoft account, however all my other accounts do let me log into multiplayer servers, the error message I get is "Failed to login: null"

I have tried both logging in and out of microsoft in my game launcher and also changing my accounts age on microsoft.net but neither have worked.

In affected versions I have been forced to choose 1.17.1 as 1.8.9 isn't an option and I play on 1.8.9