Custom Kernel Image systemd[1]: Failed to start Load Kernel Modules Error

We are getting this error:
systemd[1]: Failed to start Load Kernel Modules

We complie the kernel and modules:

download and copy kernel and tree into /kernel & /dtb and install modules into rootfs/lib

We then create the rootfs, add patches,apply binaries and build jetson.img and flash onto SD card

Is there a step we are missing? Its not an issue with SD card speed.

Please use the same sw driver package and code version.

Also, please export LOCALVERSION=-tegra when you build kernel. This is mentioned in L4T developer guide.

Added note: The reason for mention of compile with LOCALVERSION="-tegra" is because of how kernel modules are searched for. How “uname -r” responds depends on the base kernel version (e.g., “4.9.140”) and the CONFIG_LOCALVERSION (which is basically LOCALVERSION). If you have not set LOCALVERSION/CONFIG_LOCALVERSION, then using the above example the “uname -r” would just be “4.9.140”. However, if you’ve set LOCALVERSION/CONFIG_LOCALVERSION to “-tegra”, then “uname -r” would return “4.9.140-tegra”. The modules are searched for at:
/lib/modules/$(uname -r)/kernel

If your new kernel is compatible with the old modules and you don’t want to install new modules in a new path, then CONFIG_LOCALVERSION must match. When module load fails look at your “uname -r” and whether “/lib/modules/$(uname -r)/kernel” exists.