dns_rebuild_zone produces only a warning

[n8v8r]

CentOS Linux release 7.4.1708 (Core)
3.10.0-693.11.6.el7.x86_64
Apache/2.4.29 with PHP5.6.30
10.1.30-MariaDB
CWPpro version: 0.9.8.429

That is the message being displayed on an empty page after pressing

Code Select Expand

Rebuild Zone

WARNING! username NOT found!

[n8v8r]

seems fixed with CWP 0.9.8.436

[anotheruser]

Got the same issue