FBL_Promises not found

[hoary glacier]

Sounds like a postprocessing conflict.

Please check this - https://forum.unity.com/threads/build-error-on-xcode-framework-not-found-fblpromises-using-firebase-notification.1260806/#post-9092017

I assume you already install the pods and opened xcworkspace project

btw, we don't use pods for Essential Kit.