Update app.py

app.py

@@ -16,11 +16,15 @@ com.iframe("https://embed.lottiefiles.com/animation/149093")
 st.markdown("<h1 style='text-align: center'> Tweet Sentiments </h1>",unsafe_allow_html=True)
 
 #Create a form to take user inputs
-with st.form(key='tweet',clear_on_submit=True):
+with st.form(key='tweet',clear_on_submit=False):
     text=st.text_area('Copy and paste a tweet or type one',placeholder='I find it quite amusing how people ignore the effects of not taking the vaccine')
     submit=st.form_submit_button('submit')
 if submit:
-    st.success('Text received',icon='✅')
+    #Check text
+    if text="":
+        st.error('Empty text')
+    else:
+        st.success('Text received',icon='✅')
 #Select a model
 exp=st.expander(label='Choose a model and Click Continue or go ahead and Click continue to use default')
 models={'Roberta': 'Junr-syl/sentiments_analysis_Roberta',