OK, i have forced upgrade node with this command:

curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -

I install Node:

sudo apt install -y nodejs

now node version :

pi@raspberrypi:~/MagicMirror $ node -v
v10.15.0

I have remove MagicMirror folder, and reinstall from the beginning:

pi@raspberrypi:~ $ rm -rf MagicMirror/
pi@raspberrypi:~ $ bash -c "$(curl -sL https://raw.githubusercontent.com/MichMich/MagicMirror/master/installers/raspberry.sh)"

All seem OK, but they are vulnerabillity…

Cloning MagicMirror Done!
Installing dependencies ...
npm WARN deprecated time-grunt@2.0.0: Deprecated because Grunt is practically unmaintained. Move on to something better. This package will continue to work with Grunt v1, but it will not receive any updates.
npm WARN deprecated nomnom@1.8.1: Package no longer supported. Contact support@npmjs.com for more info.

> electron-chromedriver@1.8.0 install /home/pi/MagicMirror/node_modules/electron-chromedriver
> node ./download-chromedriver.js

successfully dowloaded and extracted!

> electron@2.0.16 postinstall /home/pi/MagicMirror/node_modules/electron
> node install.js

Downloading SHASUMS256.txt
[============================================>] 100.0% of 5.39 kB (5.39 kB/s)

> magicmirror@2.6.0 install /home/pi/MagicMirror
> cd vendor && npm install

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"arm"})

added 82 packages from 57 contributors and audited 220 packages in 15.326s
found 3 low severity vulnerabilities
  run `npm audit fix` to fix them, or `npm audit` for details

> magicmirror@2.6.0 postinstall /home/pi/MagicMirror
> sh installers/postinstall/postinstall.sh && npm run install-fonts

MagicMirror installation successful!

> magicmirror@2.6.0 install-fonts /home/pi/MagicMirror
> cd fonts && npm install

added 1 package from 1 contributor and audited 1 package in 3.955s
found 0 vulnerabilities

npm WARN grunt-stylelint@0.10.1 requires a peer of stylelint@^9.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN acorn-jsx@5.0.1 requires a peer of acorn@^6.0.0 but none is installed. You must install peer dependencies yourself.

added 921 packages from 1366 contributors and audited 2466 packages in 170.898s
found 8 vulnerabilities (7 low, 1 high)
  run `npm audit fix` to fix them, or `npm audit` for details
Dependencies installation Done!
Check plymouth installation ...
Splashscreen: Checking themes directory.
Splashscreen: Create theme directory if not exists.
Splashscreen: Theme copied successfully.
Splashscreen: Changed theme to MagicMirror successfully.