Blueprint files usually cannot be opened if shared like this (.uasset), if they depend on a specific parent class or linked assets (in this case the static meshes), copy an paste your graph/s to websites like blueprintue.com.
In this case I was able to open your file, but some parts are missing, so it’s kinda pointless:
The logic you are using looks pretty confusing to me, did you fill a 64 values array one by one? At this point you could have just used an array of structs with the mesh and the color and avoid all these nodes.
Personal curiosity: What do “==63” and “>30” stand for?