UiPath Academy Example is not working

I am currently learning UiPath and I can say that Academy explanations are outdated, and there are many failures in examples that consumes a lot of time to make example working.

I am trying to execute Lesson 12 - Practice 1 in Level 1 - Foundation Training - 2018.3 training, and as usual it does not work at first after all correct. Even their own given answer is not executable and stops. Walkthrough explanations in practices are misleading and not clearly guiding especially for new starters and I am frustrated honestly.

So to come back to the problem I have, assign activity in try part of first try-catch block gives error which is perfectly fine. But then instead of catching the error with an exception and moving till the end, execution stops there and waits me to move manually with step-over, etc. Is this normal?

If you did not understand what I am asking, simply go and execute the answer given by uiPath for Lesson 12 - Practice 1 in Level 1 - Foundation Training - 2018.3 training, then you will understand what I am saying.

I am desperately looking forward to have a solution on that.

Thanks!