Unable to validate JSON Schema - error: Invalid type: undefined (expected object)

[RubenHuybrighs]

I'm trying to write a function that validates if my response has the correct JSON Schema but I keep getting the same error message for whatever I try:
"error: Invalid type: undefined (expected object).
data path: .
schema path: /type.

I've explained my issue here, including the response and my function:
https://pastebin.com/VeZLGF2U

Please let me know if you need anymore details.