How to reproduce:
1. Create a new Unity project and install the Multiplayer Services package
2. Do not link the project to a Unity Cloud project ID in Project Settings -> Services
3. Import the attached "Repro" script and attach it to any GameObject
4. Enter Play Mode
5. Observe the Console
Expected results: Only the actual cause is reported, stating that the project needs to be linked to a project ID
Actual results: The correct cause is reported together with five misleading errors claiming that packages are missing - "There is no component `IActionScheduler` registered. Are you missing a package?" is reported three times, plus "There is no component `IAccessToken` registered. Are you missing a package?" and "There is no component `IProjectConfiguration` registered. Are you missing a package?", even though no package is missing
Reproducible with: 1.18.0 (6000.5.9f1)
Reproducible on: Ubuntu 24.04.4 LTS, macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested
Note: The components named in the errors are all provided by com.unity.services.core itself, which is installed. They fail only because the project-ID check aborts initialization first, so the "Are you missing a package?" wording sends the user looking for a package that is not actually missing.