Klaviyo GET-Campaigns API failing when paginating

Klaviyo Get Campaigns API failure.

I am using the `2023-08-15` of Klaviyo API to get all the campaigns. 

(https://developers.klaviyo.com/en/reference/get_campaigns)

I am making paginated requests, using the “next” url in the “links” object. 

At one point, the API is failing with `400` status code & returns

{'errors': [{'id': 'a7fdaa68-1add-4536-91ff-63096728544a',
   'status': 400,
   'code': 'invalid',
   'title': 'Invalid input.',
   'detail': "'NoneType' object has no attribute 'tzinfo'",
   'source': {'pointer': 'options_static'},
   'meta': {}}]
}

I am able to get all the campaigns using the deprecated `v1-2` API, so the API keys is fine. 

(https://developers.klaviyo.com/en/v1-2/reference/get-campaigns)