diff --git a/frappe/public/js/frappe/views/reports/report_utils.js b/frappe/public/js/frappe/views/reports/report_utils.js
index 3caf2314640..7d1378924a7 100644
--- a/frappe/public/js/frappe/views/reports/report_utils.js
+++ b/frappe/public/js/frappe/views/reports/report_utils.js
@@ -289,6 +289,10 @@ frappe.report_utils = {
 			.map((row) => {
 				return row
 					.map((col) => {
+						if (col === null) {
+							return "";
+						}
+
 						if (typeof col == "string" && col.includes('"')) {
 							col = col.replace(/"/g, '""');
 						}