Fix error for RnaSummary without pretty_so_rna_type attribute

rnacentral/portal/views.py

@@ -136,7 +136,10 @@ def rna_view(request, upi, taxid=None):
     if taxid_filtering:
         summary_text = render_to_string('portal/summary.html', vars(summary))
         summary_text = re.sub(r'\s+', ' ', summary_text.strip())
-        summary_so_terms = zip(summary.pretty_so_rna_type, summary.so_rna_type)
+        try:
+            summary_so_terms = zip(summary.pretty_so_rna_type, summary.so_rna_type)
+        except AttributeError:
+            summary_so_terms = ''
 
     context = {
         'symbol_counts': symbol_counts,