We currently experiencing issues rendering with the Mocha Pro 2020.5 (v7.5.1) OFX plug-in in Nuke 11.3v2. We are using CentOs 7. If we have a Mocha Pro node in the scene and send it to the render farm we are running into this error:
QSocketNotifier: Can only be used with threads started with QThread qt.qpa.xcb: could not connect to display qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. Available platform plugins are: minimal, offscreen, xcb.
The node just needs to be in the scene, the error will occur even when the node is not part of the current node tree. Rendering locally works with no issues. We suspect that it might be related to the fact that our render blades do not posses any graphic cards.
Does anybody has more information on this?