length = 3
i caught an error
1,2,3
4
length = 3
length = 3
I caught an error
1,2,
length = 3
I caught an error
1,2,
length = 3
I caught an error
1,2,
length = 3
I caught an error
1,2,
length = 3
I caught an error
1,2,
1,2,
undefined
length = 3