WPMUDev and Error Logs

Every site I have seems to have stuff like this in error log..

[15-Aug-2016 18:01:04 UTC] [WPMUDEV API Error] 4.1.1 | Connection timed out after 15000 milliseconds ((unknown URL) [500])
[17-Aug-2016 00:21:39 UTC] [WPMUDEV API Error] 4.1.1 | Connection timed out after 15001 milliseconds ((unknown URL) [500])
[17-Aug-2016 20:27:51 UTC] [WPMUDEV API Error] 4.1.1 | cURL error 28: Connection timed out after 10001 milliseconds ((unknown URL) [500])
[28-Sep-2016 16:00:59 UTC] PHP Warning: array_unshift() expects parameter 1 to be array, null given in /home/franks12/public_html/ELEARNING/wp-includes/class-wp-xmlrpc-server.php on line 596
[29-Sep-2016 06:00:17 UTC] [WPMUDEV API Error] 4.1.2 | cURL error 28: Operation timed out after 15001 milliseconds with 0 bytes received ((unknown URL) [500])
[30-Sep-2016 05:59:26 UTC] [WPMUDEV API Error] 4.2 | HTTP Error: 599 "" (https://premium.wpmudev.org/api/dashboard/v1/updates [599])