@bugsounet - Pretty sure.
Here is the GitHub discussion on the problem.
EtA: I am having problems installing MMM-SpeedTest.
PS J:\Development\MagicMirrors\MagicMirror\modules> git clone https://github.com/bugsounet/MMM-SpeedTest
Cloning into 'MMM-SpeedTest'...
remote: Enumerating objects: 78, done.
remote: Counting objects: 100% (78/78), done.
remote: Compressing objects: 100% (66/66), done.
remote: Total 78 (delta 33), reused 33 (delta 10), pack-reused 0
Unpacking objects: 100% (78/78), 120.78 KiB | 46.00 KiB/s, done.
PS J:\Development\MagicMirrors\MagicMirror\modules> cd .\MMM-SpeedTest\
PS J:\Development\MagicMirrors\MagicMirror\modules\MMM-SpeedTest> npm install
> MMM-SpeedTest@1.0.3 preinstall J:\Development\MagicMirrors\MagicMirror\modules\MMM-SpeedTest
> installer/preinstall.sh
'installer' is not recognized as an internal or external command,
operable program or batch file.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! MMM-SpeedTest@1.0.3 preinstall: `installer/preinstall.sh`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the MMM-SpeedTest@1.0.3 preinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm WARN Local package.json exists, but node_modules missing, did you mean to install?