I always get this error when exporting my project. I Had checked the .json file name and reattached it to my project couple of time. there’s also no issue about the package name.
________Checking dangerous extensions
________Preparing application icon
________Creating animation xml
________Creating fragment xml
________Creating listview xml in res/layout/…
________Creating listview xml in res/layout-v21/…
________Creating xml in res/drawable/…
________Creating splash png in res/drawable/…
________Creating colors xml
________Creating strings xml
________Creating styles xml
________Creating drawables xml v21
________Checking for firebase
________________Firebase components found.
________________Firebase config file error.
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Thanks for reminding me . I tried to do this but it wasn’t working turns out I haved imported the json file that I edited even I thought i did that why i ended up here.