If it is in warranty then you can go for the replacement.

Click on Get Help Now button on lower right of this screen.  After the warranty status is ascertain, support case will be open for you.

Otherwise, for replacement, compatible genuine Dell charger  https://www.parts-people.com/index.php?action=item&id=33339&srsltid=AfmBOorKc_gjQQG4UJKTQ22QXa9XcnsLiIHYUV_M-SrNKkYhBxdj7MWp

Based on the provided 20 digit serial number, there is no remaining warranty.

CN0WMDHRCH20019I0JQZ = 4 years/232 days old 65W AC power adapter