[WPMUDEV API Error] 4.3 | HTTP Error: 403 "Forbidden"

Hi Folks
I'm getting this error message in debug.log file. Do you know what the issue is?

[23-Feb-2017 08:37:54 UTC] [WPMUDEV API Error] 4.3 | HTTP Error: 403 "Forbidden" (https://premium.wpmudev.org/api/dashboard/v1/updates [403])