Learning & Assessment Activity 4.6

What happened when you removed the – 1 from the For loop end value?

This is what happened,I have taken a screen shot of the error message that displayed after I finished entering the names of my invitees into the input boxes,the first time I did this I got a list of the peoples name that I had input into the boxes in my form,now that I have taken the -1 away I don't get any list at all just this error.