somehow it just showing error all of sudden

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Summary

The issue at hand is related to the google_fonts package in a Flutter application, specifically version ^6.2.1. The error message indicates that the package is unable to load the font Inter-SemiBold due to an exception occurring when trying to load the AssetManifest.json asset. This results in an Unhandled Exception and breaks the application.

Root Cause

The root cause of this issue can be attributed to several factors, including:

  • Incorrect asset configuration: The AssetManifest.json file might not be properly configured or might be missing.
  • Dependency issues: The google_fonts package might have dependency conflicts with other packages in the project.
  • Version compatibility: The version of google_fonts being used might not be compatible with the version of Flutter or other packages in the project.

Why This Happens in Real Systems

This issue can occur in real systems due to various reasons, such as:

  • Insufficient testing: The application might not have been thoroughly tested, leading to unforeseen issues.
  • Dependency management: Poor dependency management can lead to version conflicts and compatibility issues.
  • Asset management: Incorrect or missing asset configurations can cause issues with loading assets.

Real-World Impact

The real-world impact of this issue can be significant, including:

  • Application crashes: The application can crash or become unresponsive, leading to a poor user experience.
  • Delayed development: Resolving this issue can delay development and deployment of the application.
  • Increased maintenance costs: The issue can lead to increased maintenance costs and effort to resolve and prevent similar issues in the future.

Example or Code

import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Google Fonts Demo',
      theme: ThemeData(
        textTheme: GoogleFonts.interTextTheme(
          Theme.of(context).textTheme,
        ),
      ),
      home: const MyHomePage(),
    );
  }
}

How Senior Engineers Fix It

Senior engineers can fix this issue by:

  • Verifying asset configurations: Ensuring that the AssetManifest.json file is properly configured and present.
  • Checking dependency versions: Verifying that the versions of google_fonts and other dependencies are compatible.
  • Testing thoroughly: Thoroughly testing the application to identify and resolve any issues.

Why Juniors Miss It

Junior engineers might miss this issue due to:

  • Lack of experience: Limited experience with Flutter and google_fonts can lead to unawareness of potential issues.
  • Insufficient knowledge: Limited knowledge of asset management and dependency configuration can lead to mistakes.
  • Inadequate testing: Inadequate testing can lead to unforeseen issues, such as this one, going undetected.