Can someone help me again here?

Question

My already runs but the problem is once I put my choice, It prints 'Invalid Option!' which is supposed to print only when I enter a wrong choice. It doesn't say that I have a syntax error so I don't know what's wrong with the code. We have to pass this tomorrow so please help me.
Here's the code:
https://code.sololearn.com/c9MB76ej7m06/?ref=app

Answer 1

Indentation mistake. Line 23,24 are should be inside except block.

And it saying amount is undefined. May be because you are creating Amount ( capital A)
also defining Liters but using liters.

use f{'amount: .2f} instead of b'{amount:b}.

last 2 elif, you forgot to change option values to 3,4

Answer 2

Elljay
If further help is required please notify:

https://code.sololearn.com/c79M043khtv2/?ref=app

Answer 3

Thank you everyone for helping me.