[seyfin]

Check etc/config.php file in your X-Cart installation, [log_details] section.

For default X-Cart installation, the settings look like below:

[log_details]
type = file
name = "var/log/xlite.log.php"
level = LOG_WARNING
ident = "XLite"
suppress_errors = On
suppress_log_errors = Off

Please let me know what you see in [log_details] section in your etc/config.php file.