I am able to get first page Knowledge Articles using REST API.
https://XXXX.my.salesforce.com/services/data/v44.0/support/knowledgeArticles
The result has articles for page 1
"currentPageUrl": "/services/data/v44.0/support/knowledgeArticles",
"nextPageUrl": "/services/data/v44.0/support/knowledgeArticles?pageNumber=2" ....
But when I try to get articles for page 2 using the nextPageUrl above, I get {"errorCode":"NOT_FOUND","message":"The requested resource does not exist"}
Any idea how to get all the Knowledge articles?