cannot pull docker image from dockerhub

I am not able to pull docker images from docker hub through marathon/mesos. 
I get one of two errors:

• `Aug 15 10:11:02 michael-b-dcos-agent-1 dockerd[5974]: time="2018-08-15T10:11:02.770309104-04:00" level=error msg="Not continuing with pull after error: context canceled"`
• `Failed to run docker -H ... Error: No such object: mesos-d2f333a8-fef2-48fb-8b99-28c52c327790`

However, I can manually ssh into one of the agents and successfully pull the image from the command line. 

Any pointers in the right direction?

Thank you!

Similar Issues:
https://github.com/mesosphere/marathon/issues/3869