Fatal Error Message upon download

I attempted to download this plugin and it created the following fatal error and every time I log out of my account and back in, I get the same fatal error. Please advise as soon as possible…

Fatal error: Uncaught Error: Call to a member function log() on null in /home/melani02/public_html/wp-content/plugins/bwp-google-xml-sitemaps/src/class-bwp-gxs.php:2545 Stack trace: #0 /home/melani02/public_html/wp-content/plugins/bwp-google-xml-sitemaps/src/class-bwp-gxs.php(2573): BWP_Sitemaps->_log_message_item(‘Pinged Goog…’, ‘success’) #1 /home/melani02/public_html/wp-content/plugins/bwp-google-xml-sitemaps/src/class-bwp-gxs.php(2603): BWP_Sitemaps->log_message(‘Pinged Goog…’, ‘success’) #2 /home/melani02/public_html/wp-content/plugins/bwp-google-xml-sitemaps/src/class-bwp-gxs.php(3961): BWP_Sitemaps->log_success(‘Pinged Goog…’) #3 /home/melani02/public_html/wp-includes/class-wp-hook.php(286): BWP_Sitemaps->ping(Object(WP_Post)) #4 /home/melani02/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(”, Array) #5 /home/melani02/public_html/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #6 /home/melani02/public_html/wp-includes/post.php(4140): do_action(‘new_to_publish’, Obje in /home/melani02/public_html/wp-content/plugins/bwp-google-xml-sitemaps/src/class-bwp-gxs.php on line 2545