Update app.py

app.py

@@ -130,9 +130,12 @@ def run_inference():
 
         if 'kbvqa' not in st.session_state or st.session_state['detection_model'] != detection_model:
             st.session_state['detection_model'] = detection_model
-            if load_kbvqa_model(detection_model):
-                set_model_confidence(detection_model)
-                image_qa_app(st.session_state['kbvqa'])
+            if 'model' not in st.session_state:
+            if st.button('Load Model'):
+
+                if load_kbvqa_model(detection_model):
+                    set_model_confidence(detection_model)
+                    image_qa_app(st.session_state['kbvqa'])