NullPointerException

[LuqmanArif2051]

Hi there,
I implemented this library last night and it was working fine. now when I'm testing it is giving NullPointerException . I'm not understanding why it is behaving like this. I have testing on multiple Youtube links

here is my code:

here is error response:

[LuqmanArif2051]

hello, anyone can help me out here please

[LuqmanArif2051]

@kotvertolet will you please check this out????