Page Shows Plugin Warnings

I just downloaded this plugin to try it out. But unfortunately I’m getting the below code warning messages instead of weather forecast [I hid API key in this code]:

Warning: Missing argument 6 for wp_wwo::buildWidget(), called in /homepages/5/d353472482/htdocs/acropost-en/wp-content/plugins/wp-world-weather-online/wp-world-weather-online.php on line 267 and defined in /homepages/5/d353472482/htdocs/acropost-en/wp-content/plugins/wp-world-weather-online/wp-world-weather-online.php on line 190

Warning: simplexml_load_file(http://api.worldweatheronline.com/free/v1/weather.ashx?q=Paris&num_of_days=5&format=xml&key=00000000): failed to open stream: HTTP request failed! HTTP/1.1 403 Forbidden in /homepages/5/d353472482/htdocs/acropost-en/wp-content/plugins/wp-world-weather-online/wp-world-weather-online.php on line 153

Warning: simplexml_load_file(): I/O warning : failed to load external entity “http://api.worldweatheronline.com/free/v1/weather.ashx?q=Paris&num_of_days=5&format=xml&key=00000000” in /homepages/5/d353472482/htdocs/acropost-en/wp-content/plugins/wp-world-weather-online/wp-world-weather-online.php on line 153

Any suggestions?

https://wordpress.org/plugins/wp-world-weather-online/