Fix JestAssertionError

✅ Solution

JestAssertionError usually arises from mismatches between expected and actual outcomes in Jest's `expect` assertions, particularly when custom error classes or the `Error#cause` property are involved. To fix it, ensure your assertions accurately reflect the error message or properties being tested, and consider explicitly checking the `Error#cause` if it's relevant to your test's expectations by accessing the `cause` property of the error. If you are using custom error classes, export JestAssertionError from expect so that it can be extended.