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Pulgin is not working This Error is appearing. help me

Last Error detected

Last Error: 2015-12-29 12:23:24: exception ‘Google_IO_Exception’ with message ‘Failed to connect to https://www.googleapis.com port 443: Connection refused’ in /home/allinon7/public_html/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/IO/Curl.php:86
Stack trace:
#0 /home/allinon7/public_html/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/IO/Abstract.php(135): Google_IO_Curl->executeRequest(Object(Google_Http_Request))
#1 /home/allinon7/public_html/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/Http/REST.php(39): Google_IO_Abstract->makeRequest(Object(Google_Http_Request))
#2 /home/allinon7/public_html/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/Client.php(626): Google_Http_REST::execute(Object(Google_Client), Object(Google_Http_Request))
#3 /home/allinon7/public_html/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/Service/Resource.php(225): Google_Client->execute(Object(Google_Http_Request))
#4 /home/allinon7/public_html/wp-content/plugins/google-analytics-dashboard-for-wp/tools/src/Google/Service/Analytics.php(3387): Google_Service_Resource->call(‘list’, Array, ‘Google_Service_…’)
#5 /home/allinon7/public_html/wp-content/plugins/google-analytics-dashboard-for-wp/tools/gapi.php(181): Google_Service_Analytics_ManagementProfiles_Resource->listManagementProfiles(‘~all’, ‘~all’, Array)
#6 /home/allinon7/public_html/wp-content/plugins/google-analytics-dashboard-for-wp/admin/settings.php(751): GADWP_GAPI_Controller->refresh_profiles()
#7 [internal function]: GADWP_Settings::general_settings(”)
#8 /home/allinon7/public_html/wp-includes/plugin.php(525): call_user_func_array(Array, Array)
#9 /home/allinon7/public_html/wp-admin/admin.php(236): do_action(‘toplevel_page_g…’)
#10 {main}

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