fixed duplicate key error

app.py

@@ -55,10 +55,12 @@ if st.button("Submit"):
         st.write(line)
 
 evaluator_title = st.title("Lyric Evaluator")
-artist_name_for_evaluator = st.selectbox("Artist", artist_names_list)
+artist_name_for_evaluator = st.selectbox(
+    "Artist", artist_names_list, key="genorator_select"
+)
 song_lyrics = st.text_area("Song Lyrics")
 
-if st.button("Submit"):
+if st.button("Submit", key="genorator_submit"):
     score = lyric_evaluator_model.generate_artist_coherency_score(
         artist_name_for_evaluator, song_lyrics
     )