You may need to update the root certificates on your camera. A bundle of up-to-date and Mozilla-verified CAs is maintained by the cURL open source project on
https://curl.se/ca/cacert.pem. See your camera manual for instructions on how to put it on your storage card and update the camera. Alternatively, disable root certificate validation. Your transfers will still be encrypted (but there is a slight chance of man-in-the-middle attacks if you are on insecure networks).
