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This is the use case, I have invoice list and each invoice have list of item , flutter_bloc:6.0.0 is used

Invoice Screen

Item Screen

Error page

When navigating to Invoice to Details , error will occured

This is State Classes/ Bloc

Code segments

baldr
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Saman Perera
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    Your problem has nothing to do with the bloc, is that in some situation you are not returning a widget. – Claudio Castro Oct 16 '20 at 20:11
  • Example, yout have: if a=1 return widget else if a=2 return widget else if a=3 return widget So, if you get a = 4 you will get a erro because you are not returning a widget, you dont have a else or a return widget after ifs block – Claudio Castro Oct 16 '20 at 20:13
  • your are correct , I was able to figure out the issue, Want to detect the second screen back button event and pull to data again currently it is empty when come back – Saman Perera Oct 17 '20 at 01:52

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