Fix error when headers are not found

validata_ui_next/views.py

@@ -145,7 +145,7 @@ def create_validata_report(goodtables_report):
     report['table']['row_count'] = report['table']['row-count']
 
     # Shortcut
-    report['table']['col_count'] = len(report['table']['headers'])
+    report['table']['col_count'] = len(report['table'].get('headers', []))
 
     # Add context to errors
     errors = contextualize(report['table']['errors'])