Fix

app.py

@@ -313,13 +313,13 @@ with gradio.Blocks() as demo:
             d1 = gradio.Dropdown(density_options, label="Density 1", value="1.00")
             th1 = gradio.Dropdown(thickness_options, label="Thickness 1", value="2")
         with gradio.Column(min_width=250):
-            img1 = gradio.Image(label="Endpoint 1", value=)
+            img1 = gradio.Image(label="Endpoint 1", value=generate_unit_cell("hamburger_box", "1.00", "2"))
         with gradio.Column(min_width=250):
             t2 = gradio.Dropdown(endpoint_options, label="Type 2", value="hot_dog_box")
             d2 = gradio.Dropdown(density_options, label="Density 2", value="1.00")
             th2 = gradio.Dropdown(thickness_options, label="Thickness 2", value="2")
         with gradio.Column(min_width=250):
-            img2 = gradio.Image(label="Endpoint 2")
+            img2 = gradio.Image(label="Endpoint 2", value=generate_unit_cell("hot_dog_box", "1.00", "2"))
 
         lattice_inputs_1 = [t1, d1, th1]
         [x.change(fn=generate_unit_cell, inputs=lattice_inputs_1, outputs=[img1]) for x in lattice_inputs_1]