Why is there no response?

[PaekHyun]

I wrote the config file as below.
And when I run it, no screen appears.
Did I write the config file incorrectly?

below picture is collections jason file

would you like to help me?

[BrianHepler]

I'm sorry that it's taken so long to get back to you. There's no response because the Unsplash service changed their API to require authorization. I'm working on a fix, but it's going to take some time and negotiation. They've been less than responsive.