Update app.py

app.py

@@ -48,6 +48,8 @@ def generate_image(prompt, base, motion, step, progress=gr.Progress()):
     global motion_loaded
     print(prompt, base, step)
 
+    step = int(step)
+
     if step_loaded != step:
         repo = "ByteDance/AnimateDiff-Lightning"
         ckpt = f"animatediff_lightning_{step}step_diffusers.safetensors"