"Gatsby new" crashes in Linking dependencies...

[SamyTech]

here's what's written on the cmd line
`C:\Users\samyE\Desktop

λ gatsby new hhh

info Creating new site from git: https://github.com/gatsbyjs/gatsby-starter-default.git

Cloning into 'hhh'...

remote: Counting objects: 815, done.

remote: Compressing objects: 100% (6/6), done.

remote: Total 815 (delta 1), reused 6 (delta 1), pack-reused 808

Receiving objects: 100% (815/815), 800.00 KiB | 207.00 KiB/s, done.

Resolving deltas: 100% (473/473), done.

success Created starter directory layout

info Installing packages...

yarn install v1.8.0

info No lockfile found.

warning package-lock.json found. Your project contains lock files generated by tools other than Yarn. It is advised not to mix package managers in order to avoid resolu

tion inconsistencies caused by unsynchronized lock files. To clear this warning, remove package-lock.json.

[1/4] Resolving packages...

warning gatsby > babel-preset-es2015@6.24.1: 🙌 Thanks for using Babel: we recommend using babel-preset-env now: please read babeljs.io/env to update!

warning gatsby > postcss-cssnext@2.11.0: 'postcss-cssnext' has been deprecated in favor of 'postcss-preset-env'. Read more at https://moox.io/blog/deprecating-cssnext/

warning gatsby > postcss-cssnext > caniuse-api > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.

warning gatsby > postcss-cssnext > pixrem > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.

warning gatsby > postcss-cssnext > autoprefixer > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.

warning gatsby > css-loader > cssnano > postcss-merge-rules > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.

[2/4] Fetching packages...

info fsevents@1.2.4: The platform "win32" is incompatible with this module.

info "fsevents@1.2.4" is an optional dependency and failed compatibility check. Excluding it from installation.

[3/4] Linking dependencies...

warning "gatsby > friendly-errors-webpack-plugin@1.7.0" has incorrect peer dependency "webpack@^2.0.0 || ^3.0.0 || ^4.0.0".

warning "gatsby > postcss-cssnext@2.11.0" has unmet peer dependency "caniuse-db@^1.0.30000652".

warning " > react-helmet@5.2.0" has unmet peer dependency "react@>=15.0.0".

warning "react-helmet > react-side-effect@1.1.5" has unmet peer dependency "react@^0.13.0 || ^0.14.0 || ^15.0.0 || ^16.0.0".

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C:\Users\samyE\Desktop

λ `