Ember应用启动服务器后报错：无法找到@ember/application模块

Hey there, let's work through this error you're hitting—it's a pretty common issue when spinning up Ember apps, so we can get it sorted quickly. Here are the most likely fixes to try:

• Check if the dependency is installed
  First, pop open your package.json file and look for @ember/application in the dependencies or devDependencies. If it's missing, install it via your package manager:

  # Using npm
  npm install @ember/application --save-dev
  
  # Using yarn
  yarn add @ember/application --dev
  

• Reinstall dependencies to fix corruption
  If the package is already listed in package.json, odds are the installation got corrupted somehow. Let's wipe the existing dependencies and start fresh:

  # Delete node_modules and lock files
  rm -rf node_modules package-lock.json yarn.lock
  
  # Reinstall
  npm install # or yarn install
  

• Verify your import statement
  Double-check the file that's importing @ember/application (usually app.js in your project root). Make sure the import is spelled correctly—no typos, wrong capitalization, or misplaced slashes. It should look exactly like this:

  import Application from '@ember/application';
  

• Clear Ember's cache
  Ember can hold onto stale cache data that causes weird module errors. Clear it out and restart your server:

  ember clear
  ember serve
  

• Check Ember version compatibility
  If you're working with an older Ember project, there's a chance the module structure was different. For Ember 3.20+ (Octane and later), @ember/application is the standard import, but older versions might use a different path. If this is the case, consider updating your Ember CLI or adjusting the import to match your project's version.

Most of the time, one of these steps will resolve the error. If you're still stuck, try running ember doctor to get a diagnostic report of your project's setup—it might flag other underlying issues.

内容的提问来源于stack exchange，提问作者Rodrigo Martins