getting fatal error – Error fetching OAuth2

PHP Fatal error: Uncaught exception ‘apiAuthException’ with message ‘Error fetching OAuth2 access token, message: ‘invalid_grant” in /var/www/html/wp-content/plugins/nextend-google-connect/sdk/auth/apiOAuth2.php:105\nStack trace:\n#0 /var/www/html/wp-content/plugins/nextend-google-connect/sdk/apiClient.php(138): apiOAuth2->authenticate(Array)\n#1 /var/www/html/wp-content/plugins/nextend-google-connect/nextend-google-connect.php(143): apiClient->authenticate()\n#2 /var/www/html/wp-content/plugins/nextend-google-connect/nextend-google-connect.php(117): new_google_login_action()\n#3 [internal function]: new_google_login(”)\n#4 /var/www/html/wp-includes/plugin.php(525): call_user_func_array(‘new_google_logi…’, Array)\n#5 /var/www/html/wp-login.php(409): do_action(‘login_init’)\n#6 {main}\n thrown in /var/www/html/wp-content/plugins/nextend-google-connect/sdk/auth/apiOAuth2.php on line 105

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