diff --git a/utils/convertToChartData.ts b/utils/convertToChartData.ts
index 2c22291..25943ef 100644
--- a/utils/convertToChartData.ts
+++ b/utils/convertToChartData.ts
@@ -119,7 +119,7 @@ async function appendMissingDataSections(
   } catch {}
   let body = res.body ? JSON.parse(res.body) : [];
   res =
-    body && body.documentedData.data.length
+    body && body.documentedData?.data.length
       ? body.documentedData?.data ?? body.data
       : [];