mongodb is not working with the plugin

[ronsandova]

Hi

I'm having some issues when I'm installing the plugin into my strapi.

Strapi version: 3.0.0-alpha.26.2 using npm@6.13.0 using node@v12.13.0

Basically I'm getting this error after I run the npm run setup --plugins

Building the admin...
(node:3601) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! strapi-admin@3.0.0-alpha.26.2 prebuild: `cross-env NODE_ENV=production IS_ADMIN=true node ./node_modules/strapi-helper-plugin/lib/internals/scripts/loadAdminConfigurations.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the strapi-admin@3.0.0-alpha.26.2 prebuild script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/ronsandova/.npm/_logs/2019-11-14T06_52_42_448Z-debug.log

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! strapi-admin@3.0.0-alpha.26.2 setup: `node ./scripts/setup.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the strapi-admin@3.0.0-alpha.26.2 setup script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/ronsandova/.npm/_logs/2019-11-14T06_52_42_619Z-debug.log
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! app@0.1.0 setup: `cd admin && npm run setup`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the app@0.1.0 setup script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/ronsandova/.npm/_logs/2019-11-14T06_52_42_667Z-debug.log`

Ant ideas let me know