If i were it wants me to upgrade to the latest version which the text file tells me to use 2019 version
Viewing post in Ultimate μ2 (VRC / Blender) comments
You need to use the 2019 SDK. It's one of 4 options when creating a new VRC CC project. Something to note though, AFTER importing the contents into the assets folder, you'll need to SAVE, close out of the Unity editor, go back into the vrcc project page you just created, click "upgrade to 2022", and then proceed with the login and upload process. Support for the 2019 SDK has been closed but you can upgrade 2019 projects to 2022 projects. I will have an update available shortly that will streamline the upload process, but in the meantime hopefully this helps.