My solution won't submit even though it works perfectly

[Delinquent]

Hi,

I'm having problems with week 7 exercise 01  on course Java Programming 2020.

My solution works perfectly as desired but once I submit them they cause this error: 

Something went wrong. Might be that class LiquidContainers-class public static void main(String[] args) -method has dissappeared

or the program failed with an exception. More information: java.lang.ArrayIndexOutOfBoundsException: 1

Can anyone please tell me what's wrong here? My public static void main (String[] args) hasn't disappeared as the error says so. Is it an error of the exercise or am I really missing something? I'm in total confusion and any help would surely be appreciated.. Thanks!

The link to my work is here: https://tmc.mooc.fi/paste/J7-WKBbvB6lswepfA0peQA

Best regards

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