Hi Mark,
You should have first installed that application from the Forge first:
https://www.outsystems.com/forge/component-overview/9162/servicemanagercoreservices
You can still do it, then refresh the dependencies in the Service Manager Reactive and do a 1CP.
Unfortunately it is not easy in the Forge to upload a collection of related applications, so you are forced to installed them 1-by-1 ideally in the correct order.
Regards,
Daniel