Install ruby-upr by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-upr
Description:
Upload Progress for Rack
upr is Rack middleware that allows browser-side upload progress monitoring. It is based on (and should be client-side compatible with) several upload progress modules including ones used by leading web servers. It allows any Moneta backing store in addition to DRb.
Homepage: http://upr.bogomips.org/
Version: 0.3.0-2ubuntu1
Section: universe/ruby