Update app.py

app.py

@@ -66,12 +66,12 @@ def main(threshold: float = 0.5):
 
     col1, col2 = st.columns([1, 1])
     with col1:
-        title = st.text_area("Title", height=200, placeholder="Enter paper title here...", )
+        title = st.text_area("Title", height=200, placeholder="Enter paper title here...", ).strip()
     with col2:
         abstract = st.text_area("Abstract (optional)", height=200, placeholder="Enter paper abstract here...")
 
     if st.button("Classify", type='primary', use_container_width=True):
-        if not title:
+        if len(title) == 0:
             st.error("Please enter a paper title")
         else:
             with st.spinner('In progress...'):