Mayapy - works one place, doesn't another

Hi,

A command line job that runs a Python script using mayapy works perfectly well on one set of nodes, but hangs on another set. All nodes are OSX. The nodes that work are a mix of Mojave and Catalina, with local ‘deadline’ users used for rendering. The nodes that don’t work are all Mojave and render using the root account.

The renders that hang get to the message
STDOUT: This plugin does not support createPlatformOpenGLContext!
and then go silent.

We’ve tried both Maya 2018.5 and Maya 2020.

Any suggestions would be appreciated,
HP