Update app.py

app.py

@@ -11,10 +11,12 @@ with col2:
 if x:
     pipe=pipeline("sentiment-analysis")
     t=st.text_area("Enter the Text")
-    st.write(pipe(t))
+    if t:
+       st.write(pipe(t))
 if y:             
     summarizer = pipeline("summarization")
     t1=st.text_area("Enter the Text for Summarization")
-    st.write(summarizer(t1))
+    if t1:
+        st.write(summarizer(t1))