I am getting an error when I add a row in column. I am getting following error:
I/flutter ( 6449): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═══════════════
If you are using TextField Inside a Row then you need to use Flexible or Expanded.
TextField
Row
Flexible
Expanded
More details are given here in this answer.
https://stackoverflow.com/a/45990477/4652688