fix: encode filters for URI
diff --git a/erpnext/regional/report/datev/datev.js b/erpnext/regional/report/datev/datev.js
index 4124e3d..03c729e 100644
--- a/erpnext/regional/report/datev/datev.js
+++ b/erpnext/regional/report/datev/datev.js
@@ -40,7 +40,11 @@
 		});
 
 		query_report.page.add_menu_item(__("Download DATEV File"), () => {
-			const filters = JSON.stringify(query_report.get_values());
+			const filters = encodeURIComponent(
+				JSON.stringify(
+					query_report.get_values()
+				)
+			);
 			window.open(`/api/method/erpnext.regional.report.datev.datev.download_datev_csv?filters=${filters}`);
 		});