Because Bintray is dropping their repo hosting service (https://jfrog.com/blog/into-th…gocenter-and-chartcenter/) on 2021-05-01, I have moved the omv-extras repos to github. omv-extras 5.5 will change the repos to point to github. This package is in the testing repo now. People will have until bintray is shutdown to upgrade. I will move the 5.5 package of omv-extras to the regular OMV 5.x repo in a few days. I might release an OMV 4.x package with the updated repos but I am not releasing a 3.x package (the 3.x, 4.x, and 5.x repos are on github if someone wants to manually change the repo).
OMV 5.x only!!! See post #9 below for OMV 4.x instructions
If you missed grabbing omv-extras 5.x that updates to the github repos, just install the latest omv-extras:
Install from command line as root wget -O - https://github.com/OpenMediaVault-Plugin-Developers/packages/raw/master/install | bash