Solution
The NI Linux Device Drivers 2021Q4 will install the latest kernel-devel which is not supported in RHEL/CentOS 7.6, so you are highly encouraged to use the newer version of RHEL or CentOS, such as 7.9 and above.
If you need to use RHEL/CentOS 7.6, firstly check the version of the system kernel release and the version of the installed kernel-devel. If they aren't the same, download the compatible version of kernel-devel and install it manually.
1. Check the kernel release version.
uname -r
2. Check the installed kernel-devel version.
yum info kernel-devel
3. Check if they are different and incompatible.

4. Download the
kernel-devel-3.10.0-957.el7.x86_64.rpm online, and install it.
sudo yum install kernel-devel-3.10.0-957.el7.x86_64.rpm
5. Update the kernel modules again.
sudo dkms autoinstall
6. Open your
GPIB Explorer and it should work normally.