Failed to start SYSV: Nginx is an HTTP(S) server, HTTP(S) reverse proxy and IMAP/POP3 proxy server.

It seems like you are encountering an issue with starting Nginx. The error message "Failed to start SYSV" indicates that there was a problem starting the Nginx service.

To troubleshoot this issue, you can follow these steps:

1. Check the Nginx configuration file: Make sure the configuration file is located in the correct directory and is properly configured. The default location for the configuration file is usually `/etc/nginx/nginx.conf`.

2. Validate the configuration syntax: Use the following command to check if there are any syntax errors in the configuration file:

   nginx -t

This command will validate the configuration and provide error messages if any syntax errors are found.

3. Check for conflicting services or ports: Make sure there are no other services running on the same port that Nginx is configured to use. By default, Nginx uses port 80 for HTTP and port 443 for HTTPS. You can use the following command to check for any processes using these ports:

   sudo netstat -tuln | grep -E '(:80|:443)'

4. Verify user permissions: Ensure that the user running Nginx has sufficient permissions to access necessary files and directories.

5. Check log files: Examine the Nginx error log file, which is usually located at `/var/log/nginx/error.log`, to gather more information about the error.

By following these steps, you should be able to identify and resolve the issue preventing Nginx from starting successfully.