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════════ Exception caught by rendering library ═════════════════════════════════
RenderBox was not laid out: RenderViewport#01d7d NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1687 pos 12: 'hasSize'

I/flutter ( 6397): The following assertion was thrown attaching to the render tree:
    I/flutter ( 6397): type 'Color' is not a subtype of type 'MaterialColor'
    I/flutter ( 6397): Either the assertion indicates an error in the framework itself, or we should provide 
    substantially

bottomNavigationBar: BottomNavigationBar(
        items: <BottomNavigationBarItem>[
          BottomNavigationBarItem(
            icon: Icon(Icons.devices),
            title: Text("HOME1"),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.dialpad),
            title: Text("HOME1"),
          ),
          BottomNavigationBarItem(
            icon: Icon(Icons.home),
            title: Text("HOME1"),
          ),
        ],
      ),