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

In case the other methods don't work, check if your database contains any conflicting data entries. If so, fix them.