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I will resolve any of your issues with the highest priority!
If you have troubles with connecting external storages or removable media,
please enter the following command in Terminal to fix it:
For versions of Ubuntu between 14.04 LTS (Trusty Tahr) and 15.10 (Wily Werewolf), as well as Ubuntu flavours that don’t include snap by default, snap can be installed from the Ubuntu Software Centre by searching for snapd.
Alternatively, snapd can be installed from the command line:
sudo apt update
sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
Install Disk Space Saver
To install Disk Space Saver, simply use the following command: