Question How to make visual observations work on project Hallway and project PushBlocks?

Hello everyone.
I just started learning to use this project.
I am very interested in the visual observations input in these two projects.
I noticed that the visual observation version of those projects can not train with the provided default training parameters.
My question is how do I use the visual observations in these two projects?

Thanks a lot!
I hope everyone will stay healthy during this special period.