Problem when push image in assignment 2 of Developer I

Dear Advantech,

I have a problem with my assignment in Developer I Certificate.
I finished exercise 1, but stuck at exercise 2. I can not run the image in my docker due to the error in index.js at JSON.parse (got undefined). After that, when I push the image, I didn’t see my pod/ …

Please watch my video to fully understand at this link

What should I do now and did I do anything wrong. Hope to hear you soon.
Best regards,
Nhat Quang.