# matplotlib__matplotlib-23563
# Loki Mode Multi-Agent Patch
# Attempts: 1

--- a/lib/mpl_toolkits/mplot3d/art3d.py
+++ b/lib/mpl_toolkits/mplot3d/art3d.py
@@ -82,6 +82,7 @@ class Line3D(lines.Line2D):
 
     def __init__(self, xs, ys, zs, *args, **kwargs):
         super().__init__([], [], *args, **kwargs)
+        self._verts3d = None
         self.set_3d_properties(xs, ys, zs)
 
     def set_3d_properties(self, xs, ys, zs=0, zdir='z'):