uni-app white screen cause create instanceContext failed

uni-app white screen cause create instanceContext failed

测试过的手机

小米
苹果

操作步骤：

未知原因,无法排查出来，所以附带了Hb的日志文件供你们排查

预期结果：

未知原因,无法排查出来，所以附带了Hb的日志文件供你们排查

实际结果：

未知原因,无法排查出来，所以附带了Hb的日志文件供你们排查

bug描述：

exception function:createInstanceContext, exception:white screen cause create instanceContext failed,check js stack ->Uncaught TypeError: (0 , _vuex.createStore) is not a function


| 项目属性         | 值       |
|------------------|----------|
| 产品分类         | uniapp/App |
| PC开发环境操作系统 | Windows  |
| PC开发环境操作系统版本号 | 12.3.1  |
| HBuilderX类型    | 正式     |
| HBuilderX版本号  | 3.4.6    |
| 手机系统         | 全部     |
| 手机厂商         | 华为     |
| 页面类型         | vue      |
| vue版本          | vue2     |
| 打包方式         | 云端     |
| 项目创建方式     | HBuilderX |

更多关于uni-app white screen cause create instanceContext failed的实战教程也可以访问 https://www.itying.com/category-93-b0.html

2 回复

导入了什么文件导致的?还是说你用vuex了?

更多关于uni-app white screen cause create instanceContext failed的实战教程也可以访问 https://www.itying.com/category-93-b0.html


When you encounter a “white screen” issue in a uni-app project with the error message “create instanceContext failed,” it typically indicates a problem with the initialization of the app or a specific page. Here are some common causes and solutions to help you troubleshoot and resolve the issue:

1. Check for Syntax Errors

  • A syntax error in your code (e.g., in main.js, App.vue, or a specific page) can cause the app to fail during initialization.
  • Solution: Carefully review your code for any syntax errors, especially in the main.js file or the page where the issue occurs.

2. Incorrect Page Path

  • If the page path in pages.json is incorrect or the corresponding .vue file is missing, the app may fail to load the page.
  • Solution: Verify the pages.json configuration and ensure the page path and file exist.

Example of pages.json:

{
  "pages": [
    {
      "path": "pages/index/index",
      "style": { "navigationBarTitleText": "Home" }
    }
  ]
}

3. Missing or Incorrect Dependencies

  • If a required dependency is missing or incorrectly configured, the app may fail to initialize.
  • Solution: Check your package.json file and ensure all dependencies are installed and up to date. Run npm install or yarn install to reinstall dependencies.

4. Incorrect App Initialization

  • If the main.js file is not properly configured, the app may fail to initialize.

  • Solution: Ensure your main.js file is correctly set up. Here’s an example:

    import Vue from 'vue';
import App from './App.vue';

Vue.config.productionTip = false;

const app = new Vue({
  ...App
});
app.$mount();

5. Unsupported API or Feature

  • Using an unsupported API or feature in your code can cause the app to crash.
  • Solution: Check the uni-app documentation to ensure the API or feature you’re using is supported on the platform you’re targeting (e.g., H5, WeChat Mini Program, etc.).

6. Incorrect Vue Version

  • If you’re using an incompatible version of Vue, it may cause issues with uni-app.
  • Solution: Ensure you’re using the correct version of Vue as required by uni-app. Uni-app typically works with Vue 2.x.

7. Debugging with Console Logs

  • Add console.log statements in your main.js, App.vue, and the problematic page to identify where the issue occurs.
  • Solution: Use the browser’s developer tools or the uni-app IDE’s debugging tools to inspect the logs.

8. Clear Cache and Rebuild

  • Sometimes, cached files or build artifacts can cause issues.
  • Solution: Clear the cache and rebuild the project:
    • Delete the unpackage and node_modules folders.
    • Run npm install or yarn install to reinstall dependencies.
    • Rebuild the project using npm run dev or npm run build.

9. Check for Platform-Specific Issues

  • Some issues may only occur on specific platforms (e.g., H5, WeChat Mini Program, etc.).
  • Solution: Test the app on different platforms to identify if the issue is platform-specific. Refer to the uni-app documentation for platform-specific configurations.

10. Update uni-app and Dependencies

  • If you’re using an outdated version of uni-app or its dependencies, it may cause compatibility issues.
  • Solution: Update uni-app and its dependencies to the latest version:
    npm update
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