[Python] Treelib does not show hierarchical tree node data

Using tree package treelib in Python I define a small tree that is slightly modified from the description for command show:

from treelib import Tree
tree = Tree()
tree.create_node("Root", "root")
tree.create_node("Child A", "a", parent="root",data={"name":"Mark"})
tree.create_node("Child B", "b", parent="root",data={"name":"Bob"})


I can graphically display the tree:

tree.show()

Root
├── Child A
└── Child B


Instead of the tags I want to graphically display the data. Let's first return the data of a single node:

print(tree.get_node('a').data)
output: {'name': 'Mark'}


Now display the whole tree:

tree.show(data_property="name")


I get AttributeError: 'dict' object has no attribute 'name'. How to graphically display the data of the tree nodes with treelib?

Python 3.12.4, treelib 1.8.0, Spyder 6.0.7

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