Flashing problem: Directory missing during flashing

Host system: 18.04, Kernel 5.x
Drive AGX Pegasus

During flashing in sdk , i see the following error. It seems like directory mb1/ is missing in install form the path which script is looking for:
/home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS/drive-t186ref-foundation/foundation/mb1/private-t19x/mb1_t194_dev.bin

7:13:38 DEBUG: Flash Xavier A+B in parallel: using adapter to install NV_FLASH_XAVIER_PDKFLASH_PARALLEL_COMP@DDPX to /home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX

17:13:38 INFO: Flash Xavier A+B in parallel: exec_command: sudo /home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DriveSW_Components/DrivePlatform/tools/targetfs_passwd.sh /home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS {{TARGET_PASSWORD}}

17:14:53 INFO: Flash Xavier A+B in parallel: Setting new password in /pdk_inst all_dir/drive-t186ref-linux/targetfs_a

17:14:54 INFO: Flash Xavier A+B in parallel: Setting new password in /pdk_install_dir/drive-t186ref-linux/targetfs_b

17:14:55 INFO: Flash Xavier A+B in parallel: exec_command: [ -e /dev/ttyUSB3 ] || echo Failed to flash device: detected no board connected to host with USB cable. >&2

17:14:56 INFO: Flash Xavier A+B in parallel: exec_command: cd pdkinstaller && ./pdkinstaller --installtype bindflash --boardtype ES --pdkinstalledpath /home/tajayebi/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS --configjson ./manifests/install_pdk_config/av_ddp_pegasus_hyp71_linux_tegraAB_install_config.json --consoleout enable

17:16:56 INFO: Flash Xavier A+B in parallel: Password for tajayebi:

17:16:57 INFO: Flash Xavier A+B in parallel: Aurix port /dev/ttyUSB3 found. Fetching board revision from InfoROM …

17:17:04 INFO: Flash Xavier A+B in parallel: InfoROM version is not fully supported. You will need to upgrade the InfoROM firmware for full validation.

17:17:05 INFO: Flash Xavier A+B in parallel: Executing bind cmd make -f Makefile.bind PCT=linux BOARD=e3550b01-t194a PCT_VARIANT=dev_nonrt

17:17:09 INFO: Flash Xavier A+B in parallel: Executing bind cmd make -f Makefile.bind PCT=linux BOARD=e3550b01-t194b PCT_VARIANT=dev_nonrt

17:17:13 INFO: Flash Xavier A+B in parallel: Bind partitions done!

17:17:13 INFO: Flash Xavier A+B in parallel: Processor found in ttyUSB3

17:17:21 INFO: Flash Xavier A+B in parallel: BOARD SKU : 940-63550-1100-000

17:17:22 INFO: Flash Xavier A+B in parallel: Running flash command: sudo -E /home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS/drive-t186ref-foundation//tools/host/flashtools/bootburn_t19x/bootburn.sh -b e3550b01-t194 -B qspi -x /dev/ttyUSB3 --updtcfga gos1-fs:dirname:/home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS/drive-t186ref-linux/targetfs_a --updtcfgb gos1-fs:dirname:/home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS/drive-t186ref-linux/targetfs_b -w

17:17:48 INFO: Flash Xavier A+B in parallel:

17:17:48 INFO: Flash Xavier A+B in parallel:

17:17:48 INFO: Flash Xavier A+B in parallel: stack frame 3 - 1517 CopyTegraFlashUtilities /home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS/drive-t186ref-foundation/tools/host/flashtools/bootburn_t19x/bootburn_lib.sh

17:17:54 INFO: Flash Xavier A+B in parallel: ------------ Stack Trace ------------

17:17:54 INFO: Flash Xavier A+B in parallel: error-file-not-exist – /home/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS/drive-t186ref-foundation/foundation/mb1/private-t19x/mb1_t194_dev.bin

17:17:54 ERROR: Flash Xavier A+B in parallel: command terminated with error

17:17:55 SUMMARY: Flash Xavier A+B in parallel: First Error: Installation failed.

Dear @tajayebi,
It seems you are using Pegasus board. Could you please file issue at https://forums.developer.nvidia.com/c/agx-autonomous-machines/drive-agx/57 with all the flashing logs if the issue persists.