HELP!!!! During the HLK test of latest Win 10 19H1(18298). our driver failed to PASS the HLK item "CheckForTooManyDrivers" of "Hypervisor Code Integrity Readiness Test"

Question

As the title said, our driver(works for the tochpad of notebook) cannot pass the HLK for latest Win10 19H1(18298 ). 

We cannot see any HLK log that can show more details, and there is no BSOD or DMP file to check. So there is no findings now. We are puzzled, how can the touchpad driver failed to pass that HLK item, it seems there is no relationship between them. And our driver can pass the Hypervisor test item at Win10 RS5 HLK test.

Does any one can help me to provide any clues to me to fix or investigate it?