Comment 21 for bug 1714804

Workaround is simply to use the gnome-shell-extension-system-monitor instead - it's essentially the indicator-multiload but better integrated with gnome-shell. To install it:

sudo apt install gnome-shell-extension-system-monitor

To enable it, you need to install gnome-tweak tool:

sudo apt install gnome-tweak-tool

Then launch it in console by running gnome-tweaks ; then head to the Extensions tab and make sure the System-monitor extension is enabled. You can configure it by pressing the cog-wheel button; I tend to set the Graph width to 40px and Refresh time to 500 for all shown graphs.