ionic-firebase | Real Time multi person Chat App using Ionic & Firebase | Chat library

I have been trying to retrieve data from database using ionic. The problem is the data is not displayed on my ionic page no matter what I try. I even tried from tutorials like:

• https://ionicthemes.com/tutorials/about/building-a-ionic-firebase-app-step-by-step
• https://www.javatpoint.com/ionic-firebase (which turns up similar to what I have been doing)

just incase I was wrong or out of touch but still the same issue. After searching online for help without success, I reverted back to the original, and the problem is it just display a blank page and it doesn't give any errors.

For service.ts

I am trying to set up Firebase on my Ionic Angular project. I am using the linked tutorial https://www.positronx.io/ionic-firebase-authentication-tutorial-with-examples/ to do this. I keep facing a TS2570 error: Property 'sendEmailVerification' does not exist on type 'Promise'. Did you forget to use 'await'?

I have attached my code. The only major thing I changed was that AngularFire changed the way auth is used in 6.0.0

I am new to Firebase and working on a small project to get better acquainted with Firebase/Firestore. Right now I'm using Firebase authentication to handle registering and signing in users. Once logged in a list of events is displayed for the user that I created in MySQL and am connecting to my Angular/Ionic app through a http call to Spring. (It was specified for me to do it this way to also learn some Java/Spring.)

I am able to display the events and click to add an event to a user specific "my events" list. I followed the tutorial here: https://javebratt.com/ionic-firebase-tutorial-object/

I'm having trouble deleting an event from the users list in Firestore. I'm able to see the specific event ID that gets added by Firestore when the user selects an event to add to "my events" with "event.id" in my *ngFor template in the html.

No matter what I do though I can't get the delete function to work properly. It actually is saying it's running successfully, but nothing is being deleted. I believe I'm missing something between the .doc() and .delete() methods but the Google docs are very vague (or I'm not grasping them correctly).

I've tried specifying a path such as