[SOLVED] Need help to find the error.

Question

https://code.sololearn.com/cweTji2REm4f/?ref=app

The error message is so implicit. I can't understand what's wrong with my code.
Your help will be appreciated so much.

Answer 1

Remove that 'i' on the second line.
Also your encrypt() has a return type String but it does not return anything.

Answer 2

Avinesh Ah, such a simple blunder. And I was beating my head over this.
Thank you

Answer 3

Abdul Samad It's common.