Update modules/ui.py

modules/ui.py

@@ -254,8 +254,9 @@ def display_morphosyntax_analysis_interface(nlp_models, lang_code):
 
     if st.button(t['analyze_button'], key=f"analyze_button_{lang_code}"):
         if sentence_input:
-            current_input = st.session_state[input.key]
-            doc = nlp_models[lang_code](sentence_input)
+            current_input = st.session_state[input_key]
+            if current_input:
+                doc = nlp_models[lang_code](sentence_input)
             
             word_colors = get_repeated_words_colors(doc)