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

The problem can be that you are trying to access a variable/array that is not ready yet (maybe because the future/api call is not finished)

A quick workaround could be to check the length of the array or check for null, example:

Text( (myArray?.length > 0 ? myArray[0] : '') );