PKIX building path error while reading file in Sharepoint

[ScottF]

In addition to the above, you may find some help in this thread too:

HTTPS GET Request to MISP - Error: PKIX path building failed

Hello, I am a KIME newbie, so I thought that would start with a GET request. However, I am running into an issue that I don’t know where to go next. If anybody can help me? error screenshot