Description of problem:

This is new occurrence of an old bug: https://bugzilla.redhat.com/show_bug.cgi?id=2027835

RHDS Console will fail to load an instance if the DB backup directory ( nsslapd-bakdir ) is set to a non-existing directory.
The Console will show a spinner and won't allow to select any other RHDS instances.

Version-Release number of selected component (if applicable):

1. rpm -qa | grep 389-ds
   389-ds-base-libs-2.2.7-1.module+el9dsrv+18376+e226feec.x86_64
   389-ds-base-2.2.7-1.module+el9dsrv+18376+e226feec.x86_64
   cockpit-389-ds-2.2.7-1.module+el9dsrv+18376+e226feec.noarch

How reproducible:
Always

Steps to Reproduce:
1. Change back up directory to non-existing one.

$ dsconf -D "cn=Directory Manager" ldap://localhost:38901 config replace nsslapd-bakdir=/DOES_NOT_EXIST
Enter password for cn=Directory Manager on ldap://localhost:38901:
Successfully replaced "nsslapd-bakdir"

2. Try to load RHDS instance.

3. Progress bar goes to 100% but instance won't load.

Actual results:
Instance is not loaded.

Expected results:
Instance is loaded.