Make sure you update the module to the latest version.It looks like it's been two years since this thread was started, and now the T2K4E Foundry VTT mod isn't just incompatible w/ V10, it's now needing updating to the current V11.
Support for v10 was added quite a while ago, in September 18th 2022, with the module version so aptly named v10.
The latest version is v11.01
https://github.com/fvtt-fria-ligan/twil ... t/releases
And like Fenhorn said, join the Discord for Year Zero Worlds. Stefouch (the developer of the module) is active and even admin there.
You can also post issues directly on the module's Github page
https://github.com/fvtt-fria-ligan/twil ... vtt/issues