Error on Ubuntu Noble when running sudo apt-get update

Hi,

I am trying to get Unifi server running and it requires MongoDB. I have run through the installation for MongoDB on Ubuntu Noble. When I run the command apt-get update I see the following error. Please advise how I may correct this.

GPG error: MongoDB Repositories bionic/mongodb-org/3.6 Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 58712A2291FA4AD5