Update and fix covid_stats_via_xpath.py

Author: lighting9999

web_programming/covid_stats_via_xpath.py

@@ -46,7 +46,7 @@ def covid_stats(
     data = html.fromstring(response.content).xpath(xpath_str)
     if len(data) != 3:
         print("Unexpected data format. The page structure may have changed.")
-        return CovidData("N/A", "N/A", "N/A")
+        data = "N/A", "N/A", "N/A"
     return CovidData(*data)