2865097 - Mandatory parameter 'root_password' (RootPassword) is missing or invalid

Following error occurs while try to uninstall HANA DB as root using HDBLCM Option 10:

SAP HANA Lifecycle Management - SAP HANA Database 2.0...

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Choose an action
Index | Action | Description
-------------------------------------------------------------------------------------------
1 | add_host_roles | Add Host Roles
2 | add_hosts | Add Hosts to the SAP HANA Database System
3 | check_installation | Check SAP HANA Database Installation
4 | configure_internal_network | Configure Inter-Service Communication
5 | configure_sld | Configure System Landscape Directory Registration
6 | extract_components | Extract Components
7 | print_component_list | Print Component List
8 | remove_host_roles | Remove Host Roles
9 | rename_system | Rename the SAP HANA Database System
10 | uninstall | Uninstall SAP HANA Database Components
11 | unregister_system | Unregister the SAP HANA Database System
12 | update | Update the SAP HANA Database System
13 | update_component_list | Update Component List
14 | update_components | Install or Update Additional Components
15 | update_host | Update the SAP HANA Database Instance Host integration
16 | exit | Exit (do nothing)
Enter selected action index [16]: 10

Error:
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10:28:51.778 - INFO: Output line 5:
10:28:51.778 - INFO: Output line 6:
10:28:52.094 - INFO: Output line 7: Uninstallation failed!
10:28:52.094 - INFO: Output line 8: Configuration error
10:28:52.094 - INFO: Output line 9: Mandatory parameter 'root_password' (RootPassword) is missing or invalid
10:28:52.094 - INFO: Output line 10:
10:28:52.183 - INFO: Program terminated with exit code 1
10:28:52.184 - ERR : Uninstallation of SAP HANA Database failed
10:28:52.184 - INFO: -----------------------------------------------------------
10:28:52.184 - INFO: END: Uninstall SAP HANA Database (start: 10:28:50.948 duration: 00:00:01)
-

The .ssh directory in the root user's home directory have the permissions 700 (on the host, on which starting the hdblcm).

drwx------ 2 root root 76 Oct 21 16:50 .ssh
root home directory is /root

SAP HANA DB Version 2.0

permission, password, credentials , KBA , HAN-LM-PLT , SAP HANA Platform Lifecycle Management , Problem