[Python] ValueError: Invalid Node initialization: from_node.orientation=None in steer method

I am working with a robot arm simulation, and I’m encountering an error related to the steer method. Specifically, I get the following error message:

ValueError: Invalid Node initialization: from_node.orientation=None

The issue occurs when I try to call the steer method in the following code:

new_node = self.Node(list(from_node.x), list(from_node.orientation))

It seems like the orientation attribute of from_node is None, but it’s supposed to be a list or array with orientation values. I have checked my code, and I can’t figure out why from_node.orientation is None when I try to use it.

What could be causing this issue, and how can I fix it to properly initialize the node with orientation values?

Additional Information:

The steer method is part of a larger RRT path planning algorithm.

I am using Python 3.x (specific version details can be shared if needed).

The issue occurs during a planning phase of my code.

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