After updating to 5.6.13, I was having various issues.
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.10.0-0.bpo.8-amd64
Found initrd image: /boot/initrd.img-5.10.0-0.bpo.8-amd64
Found linux image: /boot/vmlinuz-5.9.0-0.bpo.5-amd64
Found initrd image: /boot/initrd.img-5.9.0-0.bpo.5-amd64
done
Setting up openmediavault (5.6.13-1) ...
Creating configuration database ...
Migrating configuration database ...
Running migration conf_5.6.0
Setting up Salt environment ...
Processing system modifications ...
dpkg: error processing package openmediavault (--configure):
installed openmediavault package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
openmediavault
>>> *************** Error ***************
<<< *************************************
>>> *************** Error ***************
<<< *************************************
>>> *************** Error ***************
<<< *************************************
>>> *************** Error ***************
#################
Seeing messages
After this operation, 284 MB disk space will be freed.
Err:1 https://dl.bintray.com/openmediavault-plugin-developers/usul buster/main amd64 openmediavault-omvextrasorg all 5.6
403 Forbidden [IP: 54.148.26.147 443]
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Also extra's would not update.
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Resolved by installing extra's
wget -O - https://github.com/OpenMediaVa…ckages/raw/master/install | bash
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Hope this helps.