The issue that caused my Debug build of the "inspect" driver to not start on my Windows Server Essentials 2019 has been found and fixed. The "inspect" package has the Project Property
Driver Settings/Driver Model/KMDF Version Minor (Target Version)
set to 'blank', for which the driver starts successfully. However, I changed the value to '31', which causes the driver to not start.
The value '31' is for the KMDF update dated May 2020, whereas my Windows Server Essentials 2019 is version 1809 dated 2018. So my driver was requiring a later KMDF version than was available on my server. Changing '31' back to 'blank' fixed the problem. Also, my Release build had the original value of 'blank' and had no issues starting.
Thanks for your help everyone.