Update app.py

app.py

@@ -40,7 +40,7 @@ def process_results(results, highlight_terms):
             <p style='font-family: Arial;'>{}</p>
             <br>
         """.format(
-            meta_html, docid_html, result["lang"], text_html
+            meta_html, docid_html, text_html
         )
     return results_html + "<hr>"