UnionFS creation error

Error #0:
OMV\ExecException: Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C.UTF-8; omv-salt deploy run collectd 2>&1' with exit code '1': findfs: unable to resolve 'UUID=d9ec4190-8095-4f12-bde6-5171fc158356'
debian:
    Data failed to compile:
----------
    Rendering SLS 'base:omv.deploy.collectd.plugins.disk' failed: Jinja error: Command '['findfs', 'UUID=d9ec4190-8095-4f12-bde6-5171fc158356']' returned non-zero exit status 1.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/salt/utils/templates.py", line 394, in render_jinja_tmpl
    output = template.render(**decoded_context)
  File "/usr/lib/python3/dist-packages/jinja2/asyncsupport.py", line 76, in render
    return original_render(self, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 1008, in render
    return self.environment.handle_exception(exc_info, True)
  File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/lib/python3/dist-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "<template>", line 49, in top-level template code
  File "/var/cache/salt/minion/extmods/modules/omv_utils.py", line 165, in get_fs_parent_device_file
    return fs.get_parent_device_file()
  File "/usr/lib/python3/dist-packages/openmediavault/fs/__init__.py", line 163, in get_parent_device_file
    device = pyudev.Devices.from_device_file(context, self.device_file)
  File "/usr/lib/python3/dist-packages/openmediavault/fs/__init__.py", line 127, in device_file
    ['findfs', 'UUID={}'.format(self._id)]
  File "/usr/lib/python3/dist-packages/openmediavault/subprocess.py", line 63, in check_output
    return subprocess.check_output(*popenargs, **kwargs)
  File "/usr/lib/python3.7/subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "/usr/lib/python3.7/subprocess.py", line 487, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['findfs', 'UUID=d9ec4190-8095-4f12-bde6-5171fc158356']' returned non-zero exit status 1.


; line 49


---
[...]
  #     "dir": "/srv/dev-disk-by-id-scsi-0QEMU_QEMU_HARDDISK_drive-scsi0-0-1-part1",
  #     "freq": 0,
  #     "fsname": "008530ff-a134-4264-898d-9ce30eeab927",
  # }
  {% if salt['mount.is_mounted'](mountpoint.dir) %}
    {% set disk = salt['omv_utils.get_fs_parent_device_file'](mountpoint.fsname) %}    <======================
    # Extract the device name from '/dev/xxx'.
    {% set _ = disks.append(disk[5:]) %}
  {% endif %}
{% endfor %}
# Append the root filesystem.
[...]
--- in /usr/share/php/openmediavault/system/process.inc:182
Stack trace:
#0 /usr/share/php/openmediavault/engine/module/serviceabstract.inc(60): OMV\System\Process->execute()
#1 /usr/share/openmediavault/engined/rpc/config.inc(167): OMV\Engine\Module\ServiceAbstract->deploy()
#2 [internal function]: Engined\Rpc\Config->applyChanges(Array, Array)
#3 /usr/share/php/openmediavault/rpc/serviceabstract.inc(123): call_user_func_array(Array, Array)
#4 /usr/share/php/openmediavault/rpc/serviceabstract.inc(149): OMV\Rpc\ServiceAbstract->callMethod('applyChanges', Array, Array)
#5 /usr/share/php/openmediavault/rpc/serviceabstract.inc(588): OMV\Rpc\ServiceAbstract->OMV\Rpc\{closure}('/tmp/bgstatusvz...', '/tmp/bgoutputGF...')
#6 /usr/share/php/openmediavault/rpc/serviceabstract.inc(159): OMV\Rpc\ServiceAbstract->execBgProc(Object(Closure))
#7 /usr/share/openmediavault/engined/rpc/config.inc(189): OMV\Rpc\ServiceAbstract->callMethodBg('applyChanges', Array, Array)
#8 [internal function]: Engined\Rpc\Config->applyChangesBg(Array, Array)
#9 /usr/share/php/openmediavault/rpc/serviceabstract.inc(123): call_user_func_array(Array, Array)
#10 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('applyChangesBg', Array, Array)
#11 /usr/sbin/omv-engined(537): OMV\Rpc\Rpc::call('Config', 'applyChangesBg', Array, Array, 1)
#12 {main}

# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=b5171a2c-e596-4121-b12e-e295f2fce7ca		/	ext4	noatime,nodiratime,discard,errors=remount-ro	0 1
# swap was on /dev/sda5 during installation
UUID=8f1e6cfd-56cb-430f-9db9-b4c4b33eed20 none            swap    sw              0       0
# >>> [openmediavault]
/dev/disk/by-id/ata-WDC_WD30EFRX-68AX9N0_WD-WMC1T0887162-part1		/srv/dev-disk-by-id-ata-WDC_WD30EFRX-68AX9N0_WD-WMC1T0887162-part1	ext4	defaults,nofail,user_xattr,noexec,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl	0 2
/dev/disk/by-id/ata-WDC_WD30EFRX-68AX9N0_WD-WMC1T3861861-part1		/srv/dev-disk-by-id-ata-WDC_WD30EFRX-68AX9N0_WD-WMC1T3861861-part1	ext4	defaults,nofail,user_xattr,noexec,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl	0 2
/dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K7XHL8DP-part1		/srv/dev-disk-by-id-ata-WDC_WD40EFRX-68N32N0_WD-WCC7K7XHL8DP-part1	ext4	defaults,nofail,user_xattr,noexec,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl	0 2
/dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0J2LH6L-part1		/srv/dev-disk-by-id-ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0J2LH6L-part1	ext4	defaults,nofail,user_xattr,noexec,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl	0 2
/srv/dev-disk-by-id-ata-WDC_WD30EFRX-68AX9N0_WD-WMC1T0887162-part1:/srv/dev-disk-by-id-ata-WDC_WD30EFRX-68AX9N0_WD-WMC1T3861861-part1:/srv/dev-disk-by-id-ata-WDC_WD40EFRX-68N32N0_WD-WCC7K7XHL8DP-part1		/srv/d9ec4190-8095-4f12-bde6-5171fc158356	fuse.mergerfs	defaults,allow_other,direct_io,use_ino,category.create=epmfs,minfreespace=4G	0 0
# <<< [openmediavault]