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flutter - stateful widget error, A constant constructor can't call a non-constant super constructor of 'State' - Stack Overflow
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Must call super constructor in derived class before accessing 'this' or returning from derived constructor · Issue #318 · wallabyjs/quokka · GitHub
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Don't use keys in widget constructors in apps | by Alexey Inkin | Flutter Senior | Dec, 2022 | Medium
![Must call super constructor in derived class before accessing 'this' or returning from derived constructor · Issue #318 · wallabyjs/quokka · GitHub Must call super constructor in derived class before accessing 'this' or returning from derived constructor · Issue #318 · wallabyjs/quokka · GitHub](https://user-images.githubusercontent.com/979966/51151446-a3a31800-18b6-11e9-968f-db0cb53fefd1.png)
Must call super constructor in derived class before accessing 'this' or returning from derived constructor · Issue #318 · wallabyjs/quokka · GitHub
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