#7.2 Custom Exception Class in Dart
Course: Kotlin Coroutines
Learn to create your own Custom Exception subclass of Exception. Use these classes as per your need in your application. So learn how to handle runtime errors using your own custom exception class. Dart beginners tutorial.
The function ‘errorMessage’ isn’t defined.
Try importing the library that defines ‘errorMessage’, correcting the name to the name of an existing function, or defining a function named ‘errorMessage’.
I am facing this issue. Please guide me what is the reason for that and how to fix this