I need help with a encryption code I wrote in python. There's a part that give an error TypeError: can't concat str to bytes.

Question

The error shown when I try to run the python program is a TypeError that says TypeError: can't concat str to bytes. I will attach the the python file here. Please help me with a solution to it. I need to submit this assignment as soon as possible

Answer 1

Amusat olajide , before we can help you, we need to see your code here. Please put it in playground and link it here. Thanks

Answer 2

https://code.sololearn.com/cXEylXkyaZ4k/?ref=app

Answer 3

That is the code. The correction I need is from line 51