Error Message: Target host must not be null, or set in parameters, scheme=null, host= null,

This error message is dispalyed on Android devices if you have an own server system and have specified a server URL with https and /ll-master/ in the string.

To fix this, remove the /ll-master/ string from the domain name.  This can be done from your MASTER admin system > Settings Tab > Modify Server URL.

This will not affect existing user licenses, so there is no need to re-issue licenses to users apart from those using an Android device who receive this error message.  They will need a new license file that contains the updated server URL.