events.js:180 throw er; // Unhandled 'error' event ^ - node.js

Error while npm start in Windows 10
After npm install in vscode in my windows machine, I run npm, it starts but it shows the above error. I have cleaned cache but it did not solve.
I have searched on google but exception like this is not seen
events.js:180
throw er; // Unhandled 'error' event
^

This question is very similar to this one:
How can I fix ('throw er; // Unhandled 'error' event') code lifecycle?
For me personally, I fixed this exact issue by adding some missing environment variables to PATH.
C:\Windows\system32
C:\Windows
C:\Windows\System32\Wbem

Related

NodeJs server crashing randomly: events.js:72 EIO

I'm running a NodeJs server on linux and after several hours up it crashes:
events.js:72
throw er; // Unhandled 'error' event
^
Error: write EIO
at errnoException (net.js:901:11)
at Object.afterWrite (net.js:718:19)
Can anyone help me please??
Why downvoting?
I actually managed to fix it. This helped a lot: How to make a node.js application run permanently?
The problem was that the process was trying to write into a closed terminal.

gulp+browserify - get file name/line on error

I use gulp to build my browserified files, problem is that when i have a syntax error the build fails with a generic message:
events.js:141
throw er; // Unhandled 'error' event
^ SyntaxError: Unexpected token
As you can see it's impossible to understand which file caused the error.
Is there a way to get the file name/line that caused the error?
Consider using gulp-debug https://github.com/sindresorhus/gulp-debug it is a plugin that help you see what files are run through your gulp pipeline

Fb - Flo Error EBUSY hyberfil.sys

I just installed Fb Flo with Nodejs , copied the documentation example in a file and ran it like this : node flo.js and i get this error :
events.js:72
throw er; // Unhandled 'error' event
Error : EBUSY , lstat 'C:hiberfil:sys'
I read on a post that it's an error that happen when node try to write an admin system but no idea why I got this.
I'm running the terminal as admin .
Ty for your helps

Where is child_process.js?

I am trying to debug a problem with forever/nodejs, and I get this stacktrace in the error log:
chdir(): Permission denied
events.js:72
throw er; // Unhandled 'error' event
^
Error: spawn EACCES
at errnoException (child_process.js:980:11)
at Process.ChildProcess._handle.onexit (child_process.js:771:34)
This looks to me like I should be able to look at line 980 of a file named "child_process.js" to see where the error is thrown. However, I cannot locate such a file on the system even with "find". Am I missing it somehow, or is the stracktrace lying?
It's part of the node.js source. See https://github.com/joyent/node/blob/master/lib/child_process.js. I believe you can also step directly through core node code using node's built-in debugger, or a package such as node-inspector.

"Unhandled stream error in pipe" from Node.js

My app: Node.js, Express, some middleware including connect-assets and express.static.
All running on local machine (OSX, Node 0.8) in development mode (thus express.static).
Probably important details: I recently made the whole app work through HTTPS (with redirect from HTTP when necessary) and while developing I use self-signe certificate (enabled in my browser, of course).
Now, the app is often failing wit stack traces like that:
(1)
stream.js:81
throw er; // Unhandled stream error in pipe.
^
Error: write EPIPE
at errnoException (net.js:769:11)
at Object.afterWrite (net.js:593:19)
(2)
stream.js:81
throw er; // Unhandled stream error in pipe.
^
Error: socket hang up
at SecurePair.error (tls.js:948:15)
at EncryptedStream.CryptoStream._done (tls.js:432:17)
at EncryptedStream.CryptoStream._pull (tls.js:577:12)
at SecurePair.cycle (tls.js:866:20)
at EncryptedStream.CryptoStream.end (tls.js:405:13)
at Socket.onend (stream.js:66:10)
at Socket.EventEmitter.emit (events.js:126:20)
at TCP.onread (net.js:417:51)
(3)
stream.js:81
throw er; // Unhandled stream error in pipe.
^
Error: socket hang up
at createHangUpError (http.js:1264:15)
at CleartextStream.socketCloseListener (http.js:1315:23)
at CleartextStream.EventEmitter.emit (events.js:126:20)
at SecurePair.destroy (tls.js:938:22)
at process.startup.processNextTick.process._tickCallback (node.js:244:9)
Important: this happens often but not every time, so I assume this not to be a bug in my code.
I found this can be due to express.static and open files limit so I ran ulimit -n 10000 - with no effect, unfortunately.
Any ideas? This starts to be extremely frustrating.
OK, looks like I found the answer (at least I found a similar problem mentioned, tried their fix and it stopped falling):
the express.static middleware must be the last in the chain

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