Ok, I think I figured it out. Iv ended up adding a few more packages to the stagePackages list I now have
stagePackages:
- default
- libglu1-mesa
- libtinfo5
The error is now gone (I have some more errors about Vulkan drivers vkCreateInstance failed with VK_ERROR_INCOMPATIBLE_DRIVER) but I think the app is running better in general now and Chromium is reporting hardware acceleration with most items on the list now.
Thanks for the help guys