Printer compatibility in 4.9B

[ZachRose 0]

I am trying to update my printer's configuration to function within 4.9. When I go to load it I get a bunch of errors about almost all of my overrides failing ending with:

 

2021-04-07 15:33:43,396 - ERROR - [MainThread] UM.Logger.logException [112]: Exception: Error when loading container hydra_research_minnow: Setting material is missing required property label
2021-04-07 15:33:43,401 - ERROR - [MainThread] UM.Logger.logException [116]: Traceback (most recent call last):
2021-04-07 15:33:43,406 - ERROR - [MainThread] UM.Logger.logException [116]:   File "/Users/ultimaker/build/Cura/4.9/build/inst/lib/python3.8/site-packages/UM/Settings/ContainerRegistry.py", line 203, in findContainers
2021-04-07 15:33:43,411 - ERROR - [MainThread] UM.Logger.logException [116]:   File "/Applications/Ultimaker Cura 4.9B.app/Contents/MacOS/plugins/plugins/LocalContainerProvider/LocalContainerProvider.py", line 75, in loadContainer
2021-04-07 15:33:43,415 - ERROR - [MainThread] UM.Logger.logException [116]:     container.deserialize(f.read(), file_path)
2021-04-07 15:33:43,420 - ERROR - [MainThread] UM.Logger.logException [116]:   File "/Users/ultimaker/build/Cura/4.9/build/inst/lib/python3.8/site-packages/UM/Settings/DefinitionContainer.py", line 338, in deserialize
2021-04-07 15:33:43,425 - ERROR - [MainThread] UM.Logger.logException [116]:   File "/Users/ultimaker/build/Cura/4.9/build/inst/lib/python3.8/site-packages/UM/Settings/SettingDefinition.py", line 256, in deserialize
2021-04-07 15:33:43,429 - ERROR - [MainThread] UM.Logger.logException [116]:   File "/Users/ultimaker/build/Cura/4.9/build/inst/lib/python3.8/site-packages/UM/Settings/SettingDefinition.py", line 671, in _deserialize_dict
2021-04-07 15:33:43,434 - ERROR - [MainThread] UM.Logger.logException [116]: AttributeError: Setting material is missing required property label
2021-04-07 15:33:43,442 - WARNING - [MainThread] cura.Settings.CuraStackBuilder.createMachine [38]: Definition hydra_research_minnow was not found!
2021-04-07 15:33:43,446 - WARNING - [MainThread] cura.Settings.MachineManager.addMachine [410]: Failed creating a new machine!

I'm unclear what it means when it says "Setting material is missing required property label". Any suggestions about what might be broken in my printer's definition?

 

To be clear, I've found the bit in Uranium that raises the attributeerror. However I'm not clear what label needs to be on the setting "material" or if that's actually the issue at hand.

Edited April 7, 2021 by ZachRose
added context