Class constructor Observable cannot be invoked without 'new'. #274

When I submit the form, I keep getting the error Class constructor Observable cannot be invoked without 'new'. I've tried changing the compilerOptions target to es5 and es2017, but nothing changed.

I'm running this on an Android, Galaxy 7 that's plugged in.

• CLI: 7.0.10
• Cross-platform modules: I was not able to find
• Runtime(s): Android 7.0.1
• Plugin(s): "devDependencies": {
  "@angular/compiler-cli": "~10.1.0",
  "@nativescript/android": "7.0.1",
  "@nativescript/types": "~7.0.0",
  "@nativescript/webpack": "~3.0.0",
  "@ngtools/webpack": "~10.1.0",
  "typescript": "~4.0.0"
  },

When I submit the form and run the onSave() function, the issue occurs. I attached the full repo below.
https://github.com/brandonjones085/pupapp