AttributeError: 'bpy_prop collection' object has no attribute 'bezier points'

The error message "AttributeError: 'bpy_prop_collection' object has no attribute 'bezier_points'" in the Blender context typically occurs when you're trying to access an attribute or method that doesn't exist in the object you're working with. In this case, it seems you are referring to a `bpy_prop_collection` type, which is a built-in Blender data structure used for collections of properties, and specifically looking for a 'bezier points' attribute.

Beziers are commonly associated with Bézier curves or spline geometry in Blender, but a `bpy_prop_collection` does not directly have a 'bezier_points' attribute. It might be the case that the expected attribute is part of a specific type of object within the collection, like a `Curve` or `BezierCurve` object, which do have Bezier points.

To resolve the issue, make sure you are targeting the correct object instance and checking if the 'bezier points' attribute is indeed available on that type. Here are some steps to debug:

1. Verify the object: Ensure you have a `Curve` or `BezierCurve` object, and not just any `bpy_prop_collection`.

2. Check documentation: Consult the Blender API documentation to confirm if the 'bezier_points' attribute is relevant to the object's class.

3. Use hasattr() function: Before accessing the attribute, use `hasattr()` function to check if it exists, like `if hasattr(obj, 'bezier_points')`.

4. Handle the AttributeError: Wrap your code in a try-except block to catch the error gracefully and provide alternative logic if the attribute is not found.

Here's an example of how you might use the `hasattr()` function:

if hasattr(obj, 'bezier_points'):
    # Access the bezier points attribute here
    points = obj.bezier_points
else:
    print(f"The {obj} object does not have a 'bezier_points' attribute.")