Help with Firebase & FHIR APIs

I am attempting to integrate firebase cloud functions with FHIR api's. I need help clearing this error and setting this up correctly.
When running the command firebase emulators:start --only functions,firestore, the following error occurs:

i emulators: Starting emulators: functions, firestore ⚠ functions: The following emulators are not running, calls to these services from the Functions emulator will affect production: auth, database, hosting, pubsub, storage ⚠ firestore: Cloud Firestore Emulator does not support multiple databases yet. ⚠ firestore: Did not find a Cloud Firestore rules file specified in a firebase.json config file. ⚠ firestore: The emulator will default to allowing all reads and writes. Learn more about this option: https://firebase.google.com/docs/emulator-suite/install_and_configure#security_rules_configuration. i firestore: Firestore Emulator logging to firestore-debug.log ✔ firestore: Firestore Emulator UI websocket is running on 9150. i ui: Emulator UI logging to ui-debug.log i functions: Watching "/Users/jasonbourne/Desktop/fhir-server" for Cloud Functions... ✔ functions: Using node@18 from host. Serving at port 8751