# addError method Null safety

1. @protected
2. @mustCallSuper
3. @override

void addError(

1. Object error,
2. [StackTrace? stackTrace]

)
@mustCallSuper, @protected, inherited

Reports an `error` which triggers onError with an optional StackTrace.

## Implementation

    @protected
    @mustCallSuper
    @override
    void addError(Object error, [StackTrace? stackTrace]) {
      onError(error, stackTrace ?? StackTrace.current);
    }