diff --git a/erpnext/regional/india/e_invoice/utils.py b/erpnext/regional/india/e_invoice/utils.py
index 52f980676a5..1b746d5e10a 100644
--- a/erpnext/regional/india/e_invoice/utils.py
+++ b/erpnext/regional/india/e_invoice/utils.py
@@ -734,7 +734,7 @@ class GSPConnector():
 
 		_file = frappe.new_doc('File')
 		_file.update({
-			'file_name': f'QRCode_{docname}.png',
+			'file_name': 'QRCode_{}.png'.format(docname),
 			'attached_to_doctype': doctype,
 			'attached_to_name': docname,
 			'content': 'qrcode',