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Failed to compile ./src/App.js Module not found

I am having a problem running my system on my local server.
I tried running npm install then npm run start then I start getting this error :
Failed to compile
./src/app/App.js
Module not found: Can't resolve 'assets/css/style.css' in '/Volumes/Macbook Pro/02 - Business/03 - Projects/01 - All Clients/VS/MLM/03 - Source Codes/Live System/console/src/app'
I tried npm install npm run build then I get the following error :
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! console2#0.1.0 build: `npm run build-css && react-scripts build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the console2#0.1.0 build 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/av/.npm/_logs/2021-09-27T13_40_54_796Z-debug.log
I checked the logged file and I found this :
0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'run', 'build' ]
2 info using npm#6.14.15
3 info using node#v14.17.6
4 verbose run-script [ 'prebuild', 'build', 'postbuild' ]
5 info lifecycle console2#0.1.0~prebuild: console2#0.1.0
6 info lifecycle console2#0.1.0~build: console2#0.1.0
7 verbose lifecycle console2#0.1.0~build: unsafe-perm in lifecycle true
8 verbose lifecycle console2#0.1.0~build: PATH: /usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/Volumes/Macbook Pro/02 - Business/03 - Projects/01 - All Clients/VS/MLM/03 - Source Codes/Live System/console/node_modules/.bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
9 verbose lifecycle console2#0.1.0~build: CWD: /Volumes/Macbook Pro/02 - Business/03 - Projects/01 - All Clients/VS/MLM/03 - Source Codes/Live System/console
10 silly lifecycle console2#0.1.0~build: Args: [ '-c', 'npm run build-css && react-scripts build' ]
11 silly lifecycle console2#0.1.0~build: Returned: code: 1 signal: null
12 info lifecycle console2#0.1.0~build: Failed to exec build script
13 verbose stack Error: console2#0.1.0 build: `npm run build-css && react-scripts build`
13 verbose stack Exit status 1
13 verbose stack at EventEmitter.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16)
13 verbose stack at EventEmitter.emit (events.js:400:28)
13 verbose stack at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack at ChildProcess.emit (events.js:400:28)
13 verbose stack at maybeClose (internal/child_process.js:1055:16)
13 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:288:5)
14 verbose pkgid console2#0.1.0
15 verbose cwd /Volumes/Macbook Pro/02 - Business/03 - Projects/01 - All Clients/VS/MLM/03 - Source Codes/Live System/console
16 verbose Darwin 18.7.0
17 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "build"
18 verbose node v14.17.6
19 verbose npm v6.14.15
20 error code ELIFECYCLE
21 error errno 1
22 error console2#0.1.0 build: `npm run build-css && react-scripts build`
22 error Exit status 1
23 error Failed at the console2#0.1.0 build script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]
I tried the following steps but I'm getting the same error :
npm cache clean --force
delete node_modules folder
delete package-lock.json file
sudo npm install npm#latest -g this will upgrade npm to latest version
npm audit fix --force
npm upgrade --force
npm install

should assets/css/style.css be ../assets/css/style.css or some other relative path depending on what file it is in?

Why My Node Package Manager is giving me error after installing it and after running the pacakage.JSON file?

i am learning node.js. I initialized a package.json file in my project and I used a special lifecycle script "start" in my JSON file. Before initializing npm I ran "node app.js" command in terminal to run the code inside app.js. But when I ran the code using NPM, I am getting an error after running this command:
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/apple/.npm/_logs/2021-02-01T15_18_14_323Z-debug.log
here are the contents of the log file:
0 info it worked if it ends with ok
1 verbose cli [
1 verbose cli '/Users/apple/.nvm/versions/node/v14.7.0/bin/node',
1 verbose cli '/Users/apple/.nvm/versions/node/v14.7.0/bin/npm',
1 verbose cli 'start'
1 verbose cli ]
2 info using npm#6.14.7
3 info using node#v14.7.0
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle guide#1.0.0~prestart: guide#1.0.0
6 info lifecycle guide#1.0.0~start: guide#1.0.0
7 verbose lifecycle guide#1.0.0~start: unsafe-perm in lifecycle true
8 verbose lifecycle guide#1.0.0~start: PATH: /Users/apple/.nvm/versions/node/v14.7.0/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/Users/apple/Desktop/guide/node_modules/.bin:/Users/apple/.nvm/versions/node/v14.7.0/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/share/dotnet:~/.dotnet/tools:/Library/Frameworks/Mono.framework/Versions/Current/Commands
9 verbose lifecycle guide#1.0.0~start: CWD: /Users/apple/Desktop/guide
10 silly lifecycle guide#1.0.0~start: Args: [ '-c', 'node app.js' ]
11 silly lifecycle guide#1.0.0~start: Returned: code: 1 signal: null
12 info lifecycle guide#1.0.0~start: Failed to exec start script
13 verbose stack Error: guide#1.0.0 start: `node app.js`
13 verbose stack Exit status 1
13 verbose stack at EventEmitter.<anonymous> (/Users/apple/.nvm/versions/node/v14.7.0/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16)
13 verbose stack at EventEmitter.emit (events.js:314:20)
13 verbose stack at ChildProcess.<anonymous> (/Users/apple/.nvm/versions/node/v14.7.0/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack at ChildProcess.emit (events.js:314:20)
13 verbose stack at maybeClose (internal/child_process.js:1051:16)
13 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:287:5)
14 verbose pkgid guide#1.0.0
15 verbose cwd /Users/apple/Desktop/guide
16 verbose Darwin 17.7.0
17 verbose argv "/Users/apple/.nvm/versions/node/v14.7.0/bin/node" "/Users/apple/.nvm/versions/node/v14.7.0/bin/npm" "start"
18 verbose node v14.7.0
19 verbose npm v6.14.7
20 error code ELIFECYCLE
21 error errno 1
22 error guide#1.0.0 start: `node app.js`
22 error Exit status 1
23 error Failed at the guide#1.0.0 start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

You should write start like this : "start" : "node app.js". And you must install node_modules. For that you can write console npm i. Modules will install and it should not be a problem.

There are many things to do for creating a start script:
First things first, to initialize a node and npm project, there has to be a package.json file. It can be created manually, but it is advisable to use the command npm init in the terminal. This command walks you through creating a package.json file asking some questions. You can simply press enter, enter, if you want, but you could also answer them, no problem. You can also skip everything by running npm init -y instead of npm init.
Second, you have to create a script using the scripts object only, not anywhere else. To do that, open the file in your editor, look at where the object resides, or create a new object:
{
"name": "your-app",
"version": "0.0.1",
"main": "index.js",
"license": "ISC",
"scripts": {
"start": "node app.js" // here
}
}
Finally, run the script using the command npm run start in the terminal.

'node' is not recognized as an internal or external command, operable program or batch file

I'm running "npm install node-sass" from git-bash-cli in Windows 10 and getting a "'node' is not recognized as an internal or external command,
operable program or batch file." error.
I have been using this setup for years and the issues started when I upgraded node to 10.16.0
To prevent unnecessary replies:
All the questions I have seen simply say to add the path variable.
I have added Node to the PATH variable and tried a number of different ways of writing it. I ended up reinstalling Node.js and that does it automatically, so I just left it as that.
node runs from the command line, just not from scripts, like scripts in the package.json file.
I have tried reinstalling node 8.11.3, which is the version I was using before the problems started, but I get the same error. I am back to v 10.16.0 again.
Error code is as follows:
> node-sass#4.12.0 install C:\projects\true\true\website\truevue\node_modules\node-sass
> node scripts/install.js
'node' is not recognized as an internal or external command,
operable program or batch file.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents#2.0.7 (node_modules\#nuxt\builder\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents#2.0.7: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents#1.2.7 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents#1.2.7: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! node-sass#4.12.0 install: `node scripts/install.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-sass#4.12.0 install 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! C:\Users\Peter\AppData\Roaming\npm-cache\_logs\2019-07-24T23_41_06_896Z-debug.log
Here's the log when I run npm run dev on a Vue project I'm working on
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli 'C:\\Users\\Peter\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'run',
1 verbose cli 'dev' ]
2 info using npm#6.10.2-next.1
3 info using node#v10.16.0
4 verbose run-script [ 'predev', 'dev', 'postdev' ]
5 info lifecycle thisistrue.co#1.0.0~predev: thisistrue.co#1.0.0
6 info lifecycle thisistrue.co#1.0.0~dev: thisistrue.co#1.0.0
7 verbose lifecycle thisistrue.co#1.0.0~dev: unsafe-perm in lifecycle true
8 verbose lifecycle thisistrue.co#1.0.0~dev: PATH: C:\Users\Peter\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;C:\projects\true\true\website\truevue\node_modules\.bin
9 verbose lifecycle thisistrue.co#1.0.0~dev: CWD: C:\projects\true\true\website\truevue
10 silly lifecycle thisistrue.co#1.0.0~dev: Args: [ '/d /s /c',
10 silly lifecycle 'cross-env NODE_ENV=development nodemon server/index.js --watch server' ]
11 silly lifecycle thisistrue.co#1.0.0~dev: Returned: code: 1 signal: null
12 info lifecycle thisistrue.co#1.0.0~dev: Failed to exec dev script
13 verbose stack Error: thisistrue.co#1.0.0 dev: `cross-env NODE_ENV=development nodemon server/index.js --watch server`
13 verbose stack Exit status 1
13 verbose stack at EventEmitter.<anonymous> (C:\Users\Peter\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\index.js:317:16)
13 verbose stack at EventEmitter.emit (events.js:198:13)
13 verbose stack at ChildProcess.<anonymous> (C:\Users\Peter\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack at ChildProcess.emit (events.js:198:13)
13 verbose stack at maybeClose (internal/child_process.js:982:16)
13 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
14 verbose pkgid thisistrue.co#1.0.0
15 verbose cwd C:\projects\true\true\website\truevue
16 verbose Windows_NT 10.0.17134
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\Peter\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "run" "dev"
18 verbose node v10.16.0
19 verbose npm v6.10.2-next.1
20 error code ELIFECYCLE
21 error errno 1
22 error thisistrue.co#1.0.0 dev: `cross-env NODE_ENV=development nodemon server/index.js --watch server`
22 error Exit status 1
23 error Failed at the thisistrue.co#1.0.0 dev script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

Finally found an answer to this.
All I ended up doing was running npm update -g and it fixed the issue
Thanks all who helped, hope this can help someone else

I think you must add the path of node.js to the system variable
First: open Control Panel -> System and Security -> System -> Advanced System Settings -> Environment Variables
Second: in "User variables" or "System variables" find variable PATH and add node.js folder path as value.it is C:\Program Files\nodejs;If it doesn't exists, create it.
Third: Restart your computer.

Installing plugins from npm causes errors

I'm working on Visual Studio 2017 using Ionic v2, I'm trying to write an app that scan beacons. But everytime I install a plugin I get errors from the npm regarding the versions of node and npm itself.
My current versions:
Cordova version: 7.0.1
Npm version: 5.0.3
Node version: 8.1.3
For example I installed cordova bluetoothle plugin and that's the error I get:
npm ERR! node v5.4.1
npm ERR! npm v3.3.4
npm ERR! code ELIFECYCLE
npm ERR! io.cordova.myappd95ddb# build: `ionic-app-scripts build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the io.cordova.myappd95ddb# build script 'ionic-app-
scripts build'.
npm ERR! This is most likely a problem with the io.cordova.myappd95ddb
package,
npm ERR! not with npm itself.
I looked on the internet but apparently there aren't many update plugins that work with bluetooth, does that mean I necessarily need to downgrade my node and npm version?
Do you know any other plugin I could use?
npm-debug.log:
0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\Web\\External\\Node.exe',
1 verbose cli 'C:\\Program Files (x86)\\Microsoft Visual
Studio\\2017\\Community\\Web\\External\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'run',
1 verbose cli 'build',
1 verbose cli '--color=always' ]
2 info using npm#3.3.4
3 info using node#v5.4.1
4 verbose run-script [ 'prebuild', 'build', 'postbuild' ]
5 info lifecycle io.cordova.myappd95ddb#~prebuild: io.cordova.myappd95ddb#
6 silly lifecycle io.cordova.myappd95ddb#~prebuild: no script for prebuild, continuing
7 info lifecycle io.cordova.myappd95ddb#~build: io.cordova.myappd95ddb#
8 verbose lifecycle io.cordova.myappd95ddb#~build: unsafe-perm in lifecycle true
9 verbose lifecycle io.cordova.myappd95ddb#~build: PATH: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Web\External\node_modules\npm\bin\node-gyp-bin;C:\Users\giuli\Documents\Visual Studio 2017\Projects\test\test\node_modules\.bin;.\node_modules\.bin;C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\COMMUNITY\Web\External;C:\Program Files\Java\jdk1.7.0_79\bin;C:\Program Files\Git\cmd;C:\ProgramData\Oracle\Java\javapath;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files (x86)\Bitvise SSH Client;C:\Program Files\MATLAB\R2016a\runtime\win64;C:\Program Files\MATLAB\R2016a\bin;C:\Program Files (x86)\PuTTY\;C:\Program Files\nodejs\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Users\giuli\AppData\Local\Microsoft\WindowsApps;C:\Users\giuli\AppData\Roaming\npm;C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\CommonExtensions\Microsoft\TeamFoundation\Team Explorer\Git\mingw32\bin;C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\CommonExtensions\Microsoft\TeamFoundation\Team Explorer\Git\cmd;C:\Program Files\nodejs
10 verbose lifecycle io.cordova.myappd95ddb#~build: CWD: C:\Users\giuli\Documents\Visual Studio 2017\Projects\test\test
11 silly lifecycle io.cordova.myappd95ddb#~build: Args: [ '/d /s /c', 'ionic-app-scripts build' ]
12 silly lifecycle io.cordova.myappd95ddb#~build: Returned: code: 1 signal: null
13 info lifecycle io.cordova.myappd95ddb#~build: Failed to exec build script
14 verbose stack Error: io.cordova.myappd95ddb# build: `ionic-app-scripts build`
14 verbose stack Exit status 1
14 verbose stack at EventEmitter.<anonymous> (C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Web\External\node_modules\npm\lib\utils\lifecycle.js:233:16)
14 verbose stack at emitTwo (events.js:87:13)
14 verbose stack at EventEmitter.emit (events.js:172:7)
14 verbose stack at ChildProcess.<anonymous> (C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Web\External\node_modules\npm\lib\utils\spawn.js:24:14)
14 verbose stack at emitTwo (events.js:87:13)
14 verbose stack at ChildProcess.emit (events.js:172:7)
14 verbose stack at maybeClose (internal/child_process.js:821:16)
14 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)
15 verbose pkgid io.cordova.myappd95ddb#
16 verbose cwd C:\Users\giuli\Documents\Visual Studio 2017\Projects\test\test
17 error Windows_NT 10.0.15063
18 error argv "C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\Web\\External\\Node.exe" "C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\Web\\External\\node_modules\\npm\\bin\\npm-cli.js" "run" "build" "--color=always"
19 error node v5.4.1
20 error npm v3.3.4
21 error code ELIFECYCLE
22 error io.cordova.myappd95ddb# build: `ionic-app-scripts build`
22 error Exit status 1
23 error Failed at the io.cordova.myappd95ddb# build script 'ionic-app-scripts build'.
23 error This is most likely a problem with the io.cordova.myappd95ddb package,
23 error not with npm itself.
23 error Tell the author that this fails on your system:
23 error ionic-app-scripts build
23 error You can get their info via:
23 error npm owner ls io.cordova.myappd95ddb
23 error There is likely additional logging output above.
24 verbose exit [ 1, true ]

Solved like this: In Vs open Tools/Options/Project and Solution/ External Web Package. Move $PATH on top of ../external.

Angularjs 2 Quickstart - Npm run error

I have tried the angular2 5 Min quickstart from https://angular.io/guide/quickstart. All files were created by copy & paste because i am lazy and because of possible faults. I preferred the TypeScript version. At the end, i must compile and start with "npm start". I do this as admin. my OS is Windows 10.
After start, I get some errors. this is the npm-debug.log:
0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\\\node.exe',
1 verbose cli 'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'start' ]
2 info using npm#2.9.1
3 info using node#v0.12.3
4 verbose node symlink C:\Program Files\nodejs\\node.exe
5 verbose run-script [ 'prestart', 'start', 'poststart' ]
6 info prestart angular2-quickstart#1.0.0
7 info start angular2-quickstart#1.0.0
8 verbose unsafe-perm in lifecycle true
9 info angular2-quickstart#1.0.0 Failed to exec start script
10 verbose stack Error: angular2-quickstart#1.0.0 start: `tsc && concurrently "npm run tsc:w" "npm run lite" `
10 verbose stack Exit status 2
10 verbose stack at EventEmitter.<anonymous> (C:\Program Files\nodejs\node_modules\npm\lib\utils\lifecycle.js:213:16)
10 verbose stack at EventEmitter.emit (events.js:110:17)
10 verbose stack at ChildProcess.<anonymous> (C:\Program Files\nodejs\node_modules\npm\lib\utils\spawn.js:24:14)
10 verbose stack at ChildProcess.emit (events.js:110:17)
10 verbose stack at maybeClose (child_process.js:1015:16)
10 verbose stack at Process.ChildProcess._handle.onexit (child_process.js:1087:5)
11 verbose pkgid angular2-quickstart#1.0.0
12 verbose cwd C:\web\angular2-quickstart
13 error Windows_NT 6.3.9600
14 error argv "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "start"
15 error node v0.12.3
16 error npm v2.9.1
17 error code ELIFECYCLE
18 error angular2-quickstart#1.0.0 start: `tsc && concurrently "npm run tsc:w" "npm run lite" `
18 error Exit status 2
19 error Failed at the angular2-quickstart#1.0.0 start script 'tsc && concurrently "npm run tsc:w" "npm run lite" '.
19 error This is most likely a problem with the angular2-quickstart package,
19 error not with npm itself.
19 error Tell the author that this fails on your system:
19 error tsc && concurrently "npm run tsc:w" "npm run lite"
19 error You can get their info via:
19 error npm owner ls angular2-quickstart
19 error There is likely additional logging output above.
20 verbose exit [ 1, true ]
Can anybody help me get the quickstart app to start?
I also tried to start the index.html in Firefox ( because the .ts files are all translated in .js files ) but nothing happens.

Sorry, my fault. the file app.component.ts was empty. i filled it with the correct content and "run npm start" and it works. the lite browser starts, i see "My first Angular 2 App" and i will be happy until the end of my days.