The following TypeError was thrown building MessageBubble dirty type Null is not a subtype of type String

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Type 'Null' is not a subtype of type 'String' The relevant error-causing widget was MessageBubble

i am expecting to open my chat screen but this happened. chat screen

Apr 20, 2023 in Flutter by Ashwini
• 5,430 points
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1 answer to this question.

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The "Type 'Null' is not a subtype of type 'String'" error occurs when you pass a null value to a widget that expects a string. To fix this error, you can add a null check or provide a default value if the value is null. You can use the null-aware operator or the null coalescing operator to handle null values.

answered Apr 20, 2023 by pooja

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