fix bugs

app.py

@@ -3,6 +3,8 @@ from transformers import pipeline
 import pandas as pd
 
 model_list = ["distilbert-base-uncased-finetuned-sst-2-english", "cardiffnlp/twitter-roberta-base-sentiment", "finiteautomata/bertweet-base-sentiment-analysis"]
-sentiment_pipeline = st.selectbox('Which model to predict?', model_list)
+model_name = st.selectbox('Which model to predict?', model_list)
+sentiment_pipeline = pipeline(model=model_name)
 text = st.text_input("text for sentiment analysis", value="I love you")
-st.write(sentiment_pipeline([text]))
+result = sentiment_pipeline(text)
+st.write(result)