I encountered this when loading a ZOOM file, which has multiple periods. Apparently this is represented in Mantid as a workspace group. from_mantid then raised here:
I think it probably deleted the workspace group first, which also removed the children, so in the second loop iteration DeleteWorkspace raises ValueError.
Simple fix is to wrap it in a try/except, I don't know if we need more than that.
I encountered this when loading a ZOOM file, which has multiple periods. Apparently this is represented in Mantid as a workspace group.
from_mantidthen raised here:https://github.com/scipp/scippneutron/blob/022555bd9b0529eb74b0374e22802f325d2aa9b4/src/scippneutron/mantid.py#L47-L49
I think it probably deleted the workspace group first, which also removed the children, so in the second loop iteration
DeleteWorkspaceraisesValueError.Simple fix is to wrap it in a try/except, I don't know if we need more than that.