Web Reference: Jun 10, 2021 · You have declared your all fields required and non-null in your Data Model Class. Your API response is having a field absent or having a null value, that's why you are facing this issue. Resolve the common `type 'Null' is not a subtype of type 'bool'` error in Flutter when using Hive to determine if an app is running for the first time. Follow this step-by-step guide. Apr 21, 2024 · This error occurs when you’re trying to pass a null value to a method or constructor that expects a non-null argument. In this tutorial, we’ll show you how to fix this error in Flutter.
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