We are running Wordpress on Nginx and receive these errors in our log:
FastCGI sent in stderr: "PHP message: PHP Notice: Undefined index: test in /var/www/html/wp-content/plugins/elfsight-instagram-feed-cc/api/index.php on line 1173" while reading response header from upstream
The particular line in the plugin reads:
if ($response_http_code === '429' && $config['test']['recursive_client'] === 'true') {
sleep(1);
return client_request($type, $url_orig, $options);
}
Not quite sure what this error means. Any help would be much appreciated.