'There should be exactly one item with [DropdownButton]'s value: Select district. Either zero or 2 or more [DropdownMenuItem]s were detected
I keep getting a dropdown errors, There should be exactly one item with [DropdownButton]'s value: Select district. Either zero or 2 or more [DropdownMenuItem]s were detected.
If I change something get another one. API is working fine and data is added to the list. everything works but this one didn't.
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