RangeError (index): Invalid value: Valid value range is empty: 0

Question

Widget build(context) {
    try{
      if (isFirst == true) {
        fetchImage();
        fetchCategories(context);
        isFirst = false;
      }
    }catch(Excepti         


        

Answer 1

You are not getting the data. The data folder from or data source is missing. The same happened for me. Later, I created the json file for data and pointed to that location. And it got fixed simply!

Answer 2

If you are fetching data from the API consider using FutureBuilder.