I am trying to use Bugsnag with this framework, but I get this error as soon as I add the bugsnag service provider.

Diving into the code learns that providers registered in the app config file or registered in the app.php bootstrap file are run BEFORE the components. This happens in the foundation bootstrap.

When the components are registered, the instance of LogManager will be a completely new one. Registering the LoggingServiceProvider will not work, just because of that behaviour.

https://github.com/laravel-zero/framework/blob/f1d81049c68ebaae7e2310b7e6eefadcbcd19262/src/Bootstrap/RegisterProviders.php#L73