Array Error Message when running a Job

After updating from v3.6.0 to v3.6.3, it’s shown additional error message on log:

Array ( [0] => /home/mysite.com/public_html/wp-content/uploads/backwpup-cfxxxx-temp/my_wpdb.sql [1] => /home/mysite.com/public_html/wp-config.php [2] => /home/mysite.com/public_html/wp-content/uploads/backwpup-cfxxxx-temp/MySite.pluginlist.2018-11-14.txt [3] => /home/mysite.com/public_html/wp-content/uploads/backwpup-cfxxxx-temp/manifest.json [4] => /home/mysite.com/public_html/wp-content/uploads/backwpup-cfxxxx-temp/backwpup_readme.txt )

Is it okay or it need to be fixed?

Thanks