Build a chatbot in 20 minutes using Flutter and Dialogflow

I keep getting this error everytime. [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: Unable to load asset: dialogflow-275507-268d419f59b2.json

Please help me in resolving this

My chatbot is not replying? how to solve it please FIX it! HELPPP

Tutorial worked quite easily. Although I had to include HomePageDialogFlow Component in main.dart file like shown below:

import 'homepagedialogflow.dart';

Please update the tutorial code whenever possible

Hello brother, thank you for the tutorial. I'm following the steps above, but I got this error E/flutter ( 5219): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: NoSuchMethodError: The method '[]' was called on null.