usage: curtin [-h] [--showtrace] [--verbose] [--log-file LOG_FILE]
              {block-meta,curthooks,extract,hook,in-target,install,net-meta,pack,swap}
              ...
curtin: error: argument subcmd: invalid choice: 'block_meta' (choose from 'block-meta', 'curthooks', 'extract', 'hook', 'in-target', 'install', 'net-meta', 'pack', 'swap')
Installation failed with exception: Unexpected error while running command.
Command: ['curtin', 'block_meta', 'simple', '-D', '/dev/sdb']
Exit code: 2
Reason: -
Stdout: "usage: curtin [-h] [--showtrace] [--verbose] [--log-file LOG_FILE]\n              {block-meta,curthooks,extract,hook,in-target,install,net-meta,pack,swap}\n              ...\ncurtin: error: argument subcmd: invalid choice: 'block_meta' (choose from 'block-meta', 'curthooks', 'extract', 'hook', 'in-target', 'install', 'net-meta', 'pack', 'swap')\n"
Stderr: ''