Input: Two arguments or List of two arguments

I try to solve Pattern Recognition. Input: Two arguments. A pattern as a list of lists and an image as a list of lists.

But when I run my solution, I get Fail: checkio([[[1,0,0],[0,1,0],[0,0,1]],[[1,0,0,0,1,0,1,0,1],[0,1,0,0,0,1,0,1,0],[0,0,1,0,0,0,1,0,1],[1,0,0,1,0,0,0,1,0],[0,0,0,0,1,0,0,0,1],[0,1,0,0,0,1,0,0,0],[0,1,0,0,0,0,1,0,1]]])

It's look like Input: List of two arguments. Why so?