This issue is caused by having Secure Boot enabled as NI drivers do not currently support Secure Boot on Linux. To resolve this error an use GPIB Explorer, you will need to do either of the steps listed below:
- Disable Secure Boot in the BIOS or in RHE.
- Manually sign all NI drivers that reported these error. This document from RHE gives an overview of this process.
A system reboot will be required after performing either one of these steps.