Hi I had the same problem which was mentioned here: Multiple jetson nx (core boards on the development kit) cannot be started
I tried with SDK MANAGER and still got failed. See below for the error message.
08:08:59 INFO: VPI on Host - host: Reading package lists…
08:09:04 ERROR: VPI on Host - host: E: The repository ‘cdrom://Ubuntu 18.04.6 LTS Bionic Beaver - Release amd64 (20210915) bionic Release’ does not have a Release file.
08:09:04 ERROR: VPI on Host - host: Unhandled error when running sudo apt-get update
08:09:04 INFO: VPI on Host - host: [ Package Install Finished with Error ]
08:09:04 INFO: VPI on Host - host: [host] [ 36.00 KB used. Disk Avail: 3.72 GB ]
08:09:04 INFO: VPI on Host - host: [ NV_VPI_HOST_COMP Install took 34s ]
08:09:04 ERROR: VPI on Host - host: [error]: : [exec_command]: /bin/bash -c /tmp/tmp_NV_VPI_HOST_COMP.sh; [error]: Unhandled error when running sudo apt-get update
08:09:04 ERROR: VPI on Host - host: command terminated with error
08:09:04 SUMMARY: VPI on Host - host: First Error: Installation failed.
08:09:04 SUMMARY: VPI Cross Compile Package on Host - host: Depends on failed component