ApacheHVAC error: Space data could not be accessed

[hiuwocheng]

I encountered an error when I was trying to generate the system load report for my building. It shows that "The script encountered an error", "RuntimeError: Space data could not be accessed for space ZN000034. Please check your HVAC network." But the network was fine, all spaces were assigned. There were no errors when calculating the room, zone and system load. I also tried deleting the layers and add back the layers but it didn't work. I wonder if anyone knows how to solve this error. Many thanks.