Hello, when I try to install omv-extras I see this error.
Many thanks for your support 
login as: pi
pi@192.168.1.163's password:
Linux openmediavault 4.19.75-v7l+ #1270 SMP Tue Sep 24 18:51:41 BST 2019 armv7l
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Thu Jan 2 12:03:45 2020 from 192.168.1.122
SSH is enabled and the default password for the 'pi' user has not been changed.
This is a security risk - please login as the 'pi' user and type 'passwd' to set a new password.
pi@openmediavault:~ $ wget -O - https://github.com/OpenMediaVa…ckages/raw/master/install | bash
--2020-01-02 12:05:39-- https://github.com/OpenMediaVa…ckages/raw/master/install
Resolving github.com (github.com)... 140.82.118.4
Connecting to github.com (github.com)|140.82.118.4|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://raw.githubusercontent.…s/packages/master/install [following]
--2020-01-02 12:05:39-- https://raw.githubusercontent.…s/packages/master/install
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.36.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.36.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1224 (1.2K) [text/plain]
Saving to: 'STDOUT'
- 100%[===================>] 1.20K --.-KB/s in 0s
2020-01-02 12:05:39 (39.9 MB/s) - written to stdout [1224/1224]
5
Downloading omv-extras.org plugin for openmediavault 5.x ...
--2020-01-02 12:05:39-- https://github.com/OpenMediaVa…extrasorg_latest_all5.deb
Resolving github.com (github.com)... 140.82.118.4
Connecting to github.com (github.com)|140.82.118.4|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://raw.githubusercontent.…extrasorg_latest_all5.deb [following]
--2020-01-02 12:05:40-- https://raw.githubusercontent.…extrasorg_latest_all5.deb
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.36.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.36.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 69608 (68K) [application/octet-stream]
Saving to: 'openmediavault-omvextrasorg_latest_all5.deb'
openmediavault-omve 100%[===================>] 67.98K --.-KB/s in 0.04s
2020-01-02 12:05:40 (1.60 MB/s) - 'openmediavault-omvextrasorg_latest_all5.deb' saved [69608/69608]
dpkg: error: requested operation requires superuser privilege
Installing other dependencies ...
E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?
Updating repos ...
Reading package lists... Done
E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied)
E: Unable to lock directory /var/lib/apt/lists/
W: Problem unlinking the file /var/cache/apt/pkgcache.bin - RemoveCaches (13: Permission denied)
W: Problem unlinking the file /var/cache/apt/srcpkgcache.bin - RemoveCaches (13: Permission denied)
pi@openmediavault:~ $