No gui (error 500) after update

Hello. I updated the OMV using gui.
I've this situation:

1) SSH OK
2) Shares OK
3) webgui KO, error 500

Any suggestions please?

I did it, also I used safari and chrome, but it's did not help me

dpkg -l | grep openm
ii openmediavault 4.1.23-1 all openmediavault - The open network attached storage solution
ii openmediavault-keyring 1.0 all GnuPG archive keys of the OpenMediaVault archive
ii openmediavault-mysql 4.1.1 all MySQL plugin for OpenMediaVault.
ii openmediavault-nginx 4.0.3 all Nginx plugin for OpenMediaVault.
ii openmediavault-omvextrasorg 4.1.16 all OMV-Extras.org Package Repositories for OpenMediaVault
ii openmediavault-plexmediaserver 3.8.2 all OpenMediaVault Plex Media Server plugin
ii openmediavault-transmissionbt 4.0 all OpenMediaVault Transmission (BitTorrent client) plugin.

sudo dpkg --configure -a
$ omv-mkconf nginx

sudo apt-get install --reinstall openmediavault

Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 0 B/1917 kB of archives.
After this operation, 0 B of additional disk space will be used.
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LC_CTYPE = "UTF-8",
LC_TERMINAL_VERSION = "3.3.3",
LC_TERMINAL = "iTerm2",
LANG = "C.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("C.UTF-8").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Preconfiguring packages ...
(Reading database ... 57124 files and directories currently installed.)
Preparing to unpack .../openmediavault_4.1.23-1_all.deb ...
Unpacking openmediavault (4.1.23-1) over (4.1.23-1) ...
Setting up openmediavault (4.1.23-1) ...
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Updating configuration database ...
Updating configuration ...
Processing triggers for rsyslog (8.24.0-1) ...
Processing triggers for openmediavault (4.1.23-1) ...
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Restarting engine daemon ...
Cannot create socket to [localhost]:2812 -- Connection refused
Updating locale files ...
Updating file permissions ...

Purging internal cache ...

systemctl reload monit

• Request URL: http://nas.local:90/
• Request Method: GET
• Status Code: 500 Internal Server Error
• Remote Address: 192.168.88.21:90
• Referrer Policy: no-referrer-when-downgrade

reboot and apt-get install --reinstall openmediavault

Status Code: 500 Internal Server Error

sudo omv-mkconf nginx
sudo service nginx restart

did not help me

Yes, I set OMV to port 90. The 80 port I use for Nginx (web dev)

omv-firstaid

ERROR: Failed to connect /var/lib/openmediavault/engined.sock: [Errno 2] No such file or directory