Fix

game/scripts/doll/chibi.rpy

@@ -223,9 +223,10 @@ init 5 python:
 
             self.set_pose(pose or self.walk)
 
-            # List of available warpers:
-            # https://www.renpy.org/doc/html/atl.html?#warpers
-            warper = getattr(_warper, warper)
+            if isinstance(warper, str):
+                # List of available warpers:
+                # https://www.renpy.org/doc/html/atl.html?#warpers
+                warper = getattr(_warper, warper, _warper.linear)
 
             distances = []
             times = []