npm ERR! Cannot read property '0' of undefined

[CarpenterBug]

Hello github'ers,

When I try to install this plugin by running npm install webpack-livereload-plugin --save-dev, I get this warning and error:

npm WARN ajv-keywords@1.5.1 requires a peer of ajv@>=4.10.0 but none was installed.
npm ERR! Cannot read property '0' of undefined

Do you have any idea why? Here're all packages that I'm using:

"auto-prefixer": "^0.4.2",
"autoprefixer": "^7.1.2",
"babel-core": "^6.25.0",
"babel-loader": "^7.1.1",
"babel-preset-es2015": "^6.24.1",
"babel-preset-stage-0": "^6.24.1",
"css-loader": "^0.28.4",
"eslint": "^4.3.0",
"eslint-config-google": "^0.9.1",
"eslint-loader": "^1.9.0",
"extract-text-webpack-plugin": "^3.0.0",
"file-loader": "^0.11.2",
"html-webpack-plugin": "^2.29.0",
"modernizr": "^3.5.0",
"modernizr-loader": "^1.0.1",
"node-sass": "^4.5.3",
"postcss-loader": "^2.0.6",
"rimraf": "^2.6.1",
"sass-loader": "^6.0.6",
"style-loader": "^0.18.2",
"url-loader": "^0.5.9",
"webpack": "^3.4.0",
"webpack-svgstore-plugin": "^4.0.1"

Thank you in advance

[statianzo]

An npm-debug.log file should've been created after the error. Can you post that?

[CarpenterBug]

Sure, you can find it here npm-debug-log.txt (too long to post it directly here)

[statianzo]

Looks like the error is happening inside of npm code on this line when attempting to unbuild block-stream.
https://github.com/npm/npm/blob/release-next/lib/unbuild.js#L61

I'd suggest filing a ticket with this log to https://github.com/npm/npm

[statianzo]

Looks like there's already an issue posted for the error. Maybe just attach your log there. npm/npm#17987

[CarpenterBug]

Will do Done (npm/npm#18042). Thank you @statianzo

[CarpenterBug]

Based on this comment, I've found the solution to this problem.

I've deleted the node_modules folder and the package-lock.json and problem solved.

Once again, thank you for the support @statianzo

[nagaraj-a]

rimraf node_modules and npm install solved the problem