The error message “data path "/polyfills" must be a string” means that the specified data path for the property “polyfills” is not of type string. In order to fix this error, you need to provide a valid string value for the “/polyfills” data path.

Here’s an example to better explain this scenario:

    
      {
        "polyfills": "/path/to/polyfills.js"
      }
    
  

In this example, the value of the “polyfills” property is a string “/path/to/polyfills.js” which represents the path to the polyfills file. Make sure to provide a correct string value for the data path and it should resolve the error.

`) to provide detailed explanations about the error and the necessary solution. The example is presented within `

` and `` tags, representing a potential JSON object with the "polyfills" property.

Note: Although the `
` element is included here, please ensure that you have a proper HTML structure (with ``, `

`, and ``) when implementing this HTML content within an actual webpage, as those elements are important in HTML structure.

Related Post

Rolluperror: unexpected token (note that you need plugins to import files
that are not javascript)
Get_throttling_function_name: could not find match for multiple
Invalid options object. dev server has been initialized using an options
object that does not match the api schema. - options.allowedhosts[0] should 
be a non-empty string.
Onetimesetup: no suitable constructor was found
Import sys; print "%s.%s.%s" % sys.version_info[:3];