flutter / flutter/devtools

Type 'Null' is not a subtype of type 'minified:Class4351' in type cast

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#8,656 7 comments 7 reactions 0 assignees View on GitHub
exception P2
Dominant language
Dart
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Description

Type 'Null' is not a subtype of type 'minified:Class4351' in type cast

![image](https://github.com/user-attachments/assets/83c19e07-2a7e-4141-868c-23a71a954696)

Contributor guide

Open the contributing guide

Research direction

The issue names no files, tests, or entry points and provides only a minified Dart cast error plus a screenshot. Start by obtaining a reproducible scenario and unminified stack trace, then locate the failing DevTools path; done means identifying the null value's source and adding a regression test for the failure.

Written by the indexing model from the issue text.

Assessment

Tech stack
dart
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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