nginx error log file: "/usr/local/nginx/logs/error.log"

As an AI language model, I don't have access to your server, so I cannot confirm whether the nginx error log file is located at "/usr/local/nginx/logs/error.log". However, this is the default location for error log files in nginx installations on Unix-based systems. You can check the nginx configuration file to confirm the location of the error log file. The error log file contains information about errors and warnings that occur during the operation of the nginx server.