FTP warning in Apache Logs

[wilfredswholesale]

I am getting this error in my apache logs now after upgrading to WP 5.5.1, although am unsure if it was there prior as I have only just checked these logs as part of an inspection. The [Client] is actually my own servers IP address, so it is being referred from myself. Have changed names and numbers for this purpose but can provide the correct ones if need be.

Did a search and I see similar errors from several versions ago which appeared to be rectified.

[Thu Sep 10 11:09:42.456543 2020] [php7:warn] [pid 16610] [client 123.456.789.10:50200] PHP Warning:  ftp_nlist() expects parameter 1 to b
e resource, null given in /home/mydomain/www/live/wordpress/wp-admin/includes/class-wp-filesystem-ftpext.php on line 420, referer: https:/
/www.mydomain.com.au/wp-cron.php?doing_wp_cron=1599700177.3732860088348388671875
[Thu Sep 10 11:09:42.456551 2020] [php7:warn] [pid 16610] [client 123.456.789.10:50200] PHP Warning:  ftp_pwd() expects parameter 1 to be
resource, null given in /home/mydomain/www/live/wordpress/wp-admin/includes/class-wp-filesystem-ftpext.php on line 230, referer: https://w
ww.mydomain.com.au/wp-cron.php?doing_wp_cron=1599700177.3732860088348388671875
[Thu Sep 10 11:09:42.456562 2020] [php7:warn] [pid 16610] [client 123.456.789.10:50200] PHP Warning:  ftp_pwd() expects parameter 1 to be
resource, null given in /home/mydomain/www/live/wordpress/wp-admin/includes/class-wp-filesystem-ftpext.php on line 230, referer: https://w
ww.mydomain.com.au/wp-cron.php?doing_wp_cron=1599700177.3732860088348388671875
[Thu Sep 10 11:09:42.456570 2020] [php7:warn] [pid 16610] [client 123.456.789.10:50200] PHP Warning:  ftp_rmdir() expects parameter 1 to b
e resource, null given in /home/mydomain/www/live/wordpress/wp-admin/includes/class-wp-filesystem-ftpext.php on line 397, referer: https:/
/www.mydomain.com.au/wp-cron.php?doing_wp_cron=1599700177.3732860088348388671875

Seems to be related to the FTP when doing a Cron Job.

WooCommerce 4.5.1
ShoppingCart 1.1.2
Can provide status of Woocommerce if required.

[SergeyBiryukov]

Hi there, welcome to WordPress Trac!

Thanks for the report, we're already tracking this issue in #48689.