fixes

app.py

@@ -185,7 +185,7 @@ def display_results(orig_sentences,main_index,results,response_info,app_mode,mod
 
 
 def init_session():
-    if ("main_index" not in st.session_state):
+    if ("model_name" not in st.session_state):
         print("Performing init session")
         st.session_state["download_ready"] = None    
         st.session_state["model_name"] = "ss_test"