Module not found: Error: Can't resolve 'echarts/map/json/china.json' in

This error occurs when the module loader is unable to find the file 'china.json' in the file path 'echarts/map/json/'.

To resolve this error, you can try the following steps:

1. Check if the file 'china.json' exists in the specified file path 'echarts/map/json/'. If not, download the file from a trusted source and save it in the directory.

2. Check if the file path is correct. Make sure there are no spelling mistakes or incorrect directory names in the path.

3. Check if the module loader is configured properly to load the correct file path. This can be checked in the webpack.config.js file.

4. If you are using a package manager like npm or yarn, try reinstalling the package or clearing the cache and then reinstalling it.

5. If none of the above steps work, try using a different version of the package that includes the required file.