fixed error

app.py

@@ -69,11 +69,11 @@ def inference(
     
 ):
 
-    guidance_scale = 7.5,
-    controlnet_conditioning_scale = 1.5,
-    strength = 0.9,
-    seed = 2523992465,
-    sampler = "DPM++ Karras SDE",
+    guidance_scale = 7.5
+    controlnet_conditioning_scale = 1.5
+    strength = 0.9
+    seed = 2523992465
+    sampler = "DPM++ Karras SDE"
     init_image = None
     qrcode_image = None
     use_qr_code_as_init_image = True