npm install fails

[TerraTech]

OS: Windows 10
npm: v6.9.0
node: v10.16.3
git: v2.17.0.windows.1

Upon running npm install the following error happened:

f:\aurelia\learning-aurelia-image-files-picker>npm install
npm WARN deprecated [email protected]: Typings is deprecated in favor of NPM @types -- see README for more information
npm WARN deprecated [email protected]: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN deprecated [email protected]: Use `agent` option with `popsicle` directly
npm WARN deprecated [email protected]: This module moved to @hapi/hawk. Please make sure to switch over as this distribution is no longer supported and may contain bugs and critical security issues.
npm WARN deprecated [email protected]: Use uuid module instead
npm WARN deprecated [email protected]: Please use the native JSON object instead of JSON 3
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: This module moved to @hapi/sntp. Please make sure to switch over as this distribution is no longer supported and may contain bugs and critical security issues.
npm ERR! code 1
npm ERR! Command failed: git checkout 4.0
npm ERR! error: pathspec '4.0' did not match any file(s) known to git.
npm ERR!

What is the best way to proceed in resolving this issue and getting the example up and running?

Thank you!