Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK
Updating repos...
Hit:1 http://mirrors.ustc.edu.cn/raspbian/raspbian buster InRelease
Hit:2 http://mirrors.ustc.edu.cn/archive.raspberrypi.org/debian buster InRelease
Hit:3 http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian buster InRelease
Hit:4 http://mirrors.tuna.tsinghua.edu.cn/raspberrypi buster InRelease
Hit:5 http://packages.openmediavault.org/public shaitan InRelease
Reading package lists... Done
Install openmediavault-keyring...
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
openmediavault-keyring is already the newest version (1.0).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Installing openmediavault...
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
acl : Depends: libacl1 (= 2.2.53-4) but 2.2.53-10 is to be installed
bsdextrautils : Breaks: bsdmainutils (< 12.1.3) but 11.1.2 is to be installed
iptables : Depends: libxtables12 (= 1.8.2-4) but 1.8.7-1 is to be installed
libwbclient0 : Breaks: samba-libs (< 2:4.11.0+dfsg-1~) but 2:4.9.5+dfsg-5+deb10u1+rpi1 is to be installed
nfs-kernel-server : Depends: nfs-common (= 1:1.3.4-2.5+deb10u1) but 1:1.3.4-6 is to be installed
php-pam : Depends: phpapi-20190902 but it is not installable
python3-dbus : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-lxml : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-markupsafe : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-msgpack : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-netifaces : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-psutil : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-pycryptodome : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-six : Breaks: libpython-stdlib (< 2.7.18) but 2.7.16-1 is to be installed
Breaks: python (< 2.7.18) but 2.7.16-1 is to be installed
Breaks: python-minimal (< 2.7.18) but 2.7.16-1 is to be installed
python3-systemd : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-yaml : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
python3-zmq : Depends: python3 (< 3.8) but 3.9.2-3 is to be installed
samba-libs : Depends: libwbclient0 (= 2:4.9.5+dfsg-5+deb10u1+rpi1) but 2:4.13.5+dfsg-2 is to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
failed to install openmediavault package.