Update app.py

app.py

@@ -213,7 +213,7 @@ def infer(image_in, chosen_model):
         raise gr.Error("Please provide an image input")
 
     print(f"CHOSEN MODEL:  {chosen_model}")
-    if chosen_model == None :
+    if chosen_model == [] :
         raise gr.Error("Please pick a model")
     
     gr.Info("Getting image caption with Kosmos2...")