SDK Components fails to download and install on host machine(ubuntu 16.04)

Hi Team,

I am trying to bring-up Jetson AGX Xavier with host machine (ubuntu 16.04),
While trying installation using SDK manager on host side i see download and installation failures.

18:28:39 INFO: *** Retrying to install. attempt number: 2
18:28:53 INFO: Install pre check Access to APT repository and ability to install Debian packages with it. verify succeed.
18:28:53 INFO: Drivers for Jetson: start to download https://developer.nvidia.com/assets/embedded/secure/tools/files/jetpack-sdks/jetpack-4.4-ga/JETPACK_44_b186/T194/Jetson_Linux_R32.4.3_aarch64.tbz2 to /media/hnd/third_drive/Nvidia_jetson_AGX/SDK_download/Jetson_Linux_R32.4.3_aarch64.tbz2
18:28:53 ERROR: Drivers for Jetson: DevZone get download url failed: RequestError: unable to get local issuer certificate.
18:28:53 ERROR: Drivers for Jetson: Download ‘Drivers for Jetson’ failure
18:28:53 ERROR: Drivers for Jetson: DevZone get download url failed: RequestError: unable to get local issuer certificate.
18:28:53 ERROR: Drivers for Jetson: Download ‘Drivers for Jetson’ failure
18:28:53 ERROR: Drivers for Jetson: download failed
18:28:53 : Drivers for Jetson: download https://developer.nvidia.com/assets/embedded/secure/tools/files/jetpack-sdks/jetpack-4.4-ga/JETPACK_44_b186/T194/Jetson_Linux_R32.4.3_aarch64.tbz2 failed, retrying 1…
18:28:53 INFO: Drivers for Jetson: start to download https://developer.nvidia.com/assets/embedded/secure/tools/files/jetpack-sdks/jetpack-4.4-ga/JETPACK_44_b186/T194/Jetson_Linux_R32.4.3_aarch64.tbz2 to /media/hnd/third_drive/Nvidia_jetson_AGX/SDK_download/Jetson_Linux_R32.4.3_aarch64.tbz2
18:28:53 ERROR: Drivers for Jetson: DevZone get download url failed: RequestError: unable to get local issuer certificate.
18:28:53 ERROR: Drivers for Jetson: Download ‘Drivers for Jetson’ failure
18:28:53 ERROR: Drivers for Jetson: DevZone get download url failed: RequestError: unable to get local issuer certificate.
18:28:53 ERROR: Drivers for Jetson: Download ‘Drivers for Jetson’ failure
18:28:53 ERROR: Drivers for Jetson: download failed
18:28:53 : Drivers for Jetson: download https://developer.nvidia.com/assets/embedded/secure/tools/files/jetpack-sdks/jetpack-4.4-ga/JETPACK_44_b186/T194/Jetson_Linux_R32.4.3_aarch64.tbz2 failed, retrying 2…

Any help would be much appreciated.
Let me know if any further info is required.

Thanks,