Update

app.py

@@ -33,6 +33,7 @@ pipe.scheduler = EulerDiscreteScheduler.from_config(pipe.scheduler.config, times
 def generate_image(prompt, base, motion, step):
     global step_loaded
     global base_loaded
+    global motion_loaded
     print(prompt, base, step)
 
     if step_loaded != step:
@@ -47,8 +48,9 @@ def generate_image(prompt, base, motion, step):
 
     if motion_loaded != motion:
         pipe.unload_lora_weights()
-        pipe.load_lora_weights(hf_hub_download("guoyww/animatediff", motion), adapter_name="motion")
-        pipe.set_adapters(["motion"], [0.7])
+        if motion != "":
+            pipe.load_lora_weights(hf_hub_download("guoyww/animatediff", motion), adapter_name="motion")
+            pipe.set_adapters(["motion"], [0.7])
         motion_loaded = motion
 
     output = pipe(prompt=prompt, guidance_scale=1.0, num_inference_steps=step)
@@ -80,11 +82,11 @@ with gr.Blocks(css="style.css") as demo:
             select_motion = gr.Dropdown(
                 label='Motion LoRAs',
                 choices=[
-                    ("None", None),
+                    ("None", ""),
                     ("Zoom in", "v2_lora_ZoomIn.ckpt"),
                     ("Zoom out", "v2_lora_ZoomOut.ckpt"),
                 ],
-                value=None,
+                value="",
                 interactive=True
             )
             select_step = gr.Dropdown(