diff --git a/dem-L-SAR/DemMain.py b/dem-L-SAR/DemMain.py
index 37e4b96..514fd2d 100644
--- a/dem-L-SAR/DemMain.py
+++ b/dem-L-SAR/DemMain.py
@@ -518,6 +518,7 @@ class DemMain:
         shutil.copy(meta_xml_path, out_xml)
         self.make_targz(self.__out_para, self.__product_dic)
 
+
         logger.info("write quick view and .tar.gz finish")
         logger.info('DEM production successful !')
         logger.info('progress bar: 100%')