What happens if you change the webpart folder name in SPFx?

 Ans:-

If you change the webpart folder name alone without changing the appropriate configurations, you will end up with the error like below, “No localized files found under the root directory”

So, whenever you change the webpart folder name make sure to change the below localized resources path in config.json

{  

  "$schema": "https://dev.office.com/json-schemas/spfx-build/config.2.0.schema.json",  

  "version": "2.0",  

  "bundles": {  

    "first-sp-fx-web-part": {  

      "components": [  

        {  

          "entrypoint": "./lib/webparts/firstSpFx1/FirstSpFxWebPart.js",  

          "manifest": "./src/webparts/firstSpFx1/FirstSpFxWebPart.manifest.json"  

        }  

      ]  

    }  

  },  

  "externals": {},  

  "localizedResources": {  

    "FirstSpFxWebPartStrings": "lib/webparts/firstSpFx1/loc/{locale}.js"  

  }  

}