add error about ID

app.py

@@ -70,8 +70,11 @@ def parse_openreview_id(submissions, paper_id, reviewer_id):
     curr_review = submissions[ind]
     bad_review = next((i for i, entry in enumerate(curr_review.details['replies'])
               if entry['signatures'][0].split('_')[-1] == reviewer_id), None)
-    
-    review_content = curr_review.details["replies"][bad_review]["content"]
+
+    try:
+        review_content = curr_review.details["replies"][bad_review]["content"]
+    except:
+        st.error("Paper ID or reviewer ID are incorrect")
 
     urllib.request.urlretrieve(paper_url, f"{paper_id}.pdf")
     pdf = f"{paper_id}.pdf"