Problems in 'npm install' step : attached complete log file

[marcoippolito]

After downloading and unzipping the vuetify-material-dashboard-master.zip file in Ubuntu 18.04.02 Desktop, I executed 'npm install':

(base) marco@marco-U36SG:~/vueMatters/vuetify-material-dashboard-master$ npm install
npm WARN deprecated core-js@2.6.11: core-js@<3 is no longer maintained and not 
recommended for usage due to the number of issues. Please, upgrade your dependencies to the
actual version of core-js@3.
npm WARN deprecated bfj-node4@5.3.1: Switch to the `bfj` package for fixes and new features!
npm WARN deprecated circular-json@0.3.3: CircularJSON is in maintenance only, flatted is its 
successor.

> yorkie@2.0.0 install /home/marco/vueMatters/vuetify-material-dashboard-master
/node_modules/yorkie
> node bin/install.js

I attach here the complete log file.

node version: v12.11.0
npm version: 6.13.1
@vue/cli 4.1.1

How to correctly proceed?
Marco
2019-12-18T06_57_38_147Z-debug.log

[brccosta]

I haver the same problem...