Remote disown throws error about notify script that isn't available

The devtools (as of this devtools!166 (merged)) has a tool for dropping packages to the AUR. One of the things it (optionally) does is disown the package with a remote ssh command:

ssh "${AUR_URL_SSH}" disown "${pkgbase}"

As of the v6.2.5 releaes, this is throwing an error:

==> Disowning electron20 on the AUR
Traceback (most recent call last):
  File "/srv/http/aurweb/.venv/bin/aurweb-git-serve", line 6, in <module>
    sys.exit(main())
             ^^^^^^
  File "/srv/http/aurweb/aurweb/git/serve.py", line 643, in main
    serve(action, cmdargv, user, privileged, remote_addr)
  File "/srv/http/aurweb/aurweb/git/serve.py", line 580, in serve
    pkgbase_disown(pkgbase, user, privileged)
  File "/srv/http/aurweb/aurweb/git/serve.py", line 292, in pkgbase_disown
    subprocess.Popen((notify_cmd, "disown", str(userid), str(pkgbase_id)))
  File "/usr/lib/python3.11/subprocess.py", line 1024, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.11/subprocess.py", line 1917, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'aurweb-notify'

Not sure if this is a bug in the software here or a deployment issue, but something to look into.