Error “Network is unreachable” when authorizing plugin

Last Error: 2017-06-15 11:27:57: exception ‘Google_IO_Exception’ with message ‘Failed to connect to 2a00:1450:4017:806::200d: Network is unreachable’ in /srv/disk6/1824927/www/com-con.myartsonline.com/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/IO/Curl.php:126
Stack trace:
#0 /srv/disk6/1824927/www/com-con.myartsonline.com/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/IO/Abstract.php(136): Google_IO_Curl->executeRequest(Object(Google_Http_Request))
#1 /srv/disk6/1824927/www/com-con.myartsonline.com/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/Auth/OAuth2.php(112): Google_IO_Abstract->makeRequest(Object(Google_Http_Request))
#2 /srv/disk6/1824927/www/com-con.myartsonline.com/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/Client.php(128): Google_Auth_OAuth2->authenticate(‘4/LNRIHmLF5aSlz…’, false)
#3 /srv/disk6/1824927/www/com-con.myartsonline.com/wp-content/plugins/google-analytics-dashboard-for-wp/admin/settings.php(1077): Google_Client->authenticate(‘4/LNRIHmLF5aSlz…’)
#4 [internal function]: GADWP_Settings::general_settings(”)
#5 /srv/disk6/1824927/www/com-con.myartsonline.com/wp-includes/class-wp-hook.php(298): call_user_func_array(Array, Array)
#6 /srv/disk6/1824927/www/com-con.myartsonline.com/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(”, Array)
#7 /srv/disk6/1824927/www/com-con.myartsonline.com/wp-includes/plugin.php(453): WP_Hook->do_action(Array)
#8 /srv/disk6/1824927/www/com-con.myartsonline.com/wp-admin/admin.php(222): do_action(‘toplevel_page_g…’)
#9 {main}