uncaughtException: Cannot read properties of undefin ed (reading '_id')

[sanjarbek-ismatov]

[cleaverm]

I started getting this error last week after updating a couple of MongoDB-related dependencies in a project. mongodb is at 4.17.1 in the project but Yarn was installing some 6.x.x versions for other dependencies.

Putting this in package.json has resolved it for me:

  "resolutions": {
    "mongodb": "4.17.1"
  },

[theBGuy]

Also getting this error, changing the mongodb version didn't fix it for me. I have tracked down the error (at least mine) to fromMulterStream method. The value passed to emitFile when the finish event is triggered is undefined.

[sanjarbek-ismatov]

Also getting this error, changing the mongodb version didn't fix it for me. I have tracked down the error (at least mine) to fromMulterStream method. The value passed to emitFile when the finish event is triggered is undefined.

It helped me, it's working correctly

Hi, this error still is problem for someone. May you help me ?

[1] TypeError: Cannot read properties of undefined (reading '_id')
[1] at GridFSBucketWriteStream.emitFile (/home/cppdozer/Projects/encore/server/node_modules/multer-gridfs-storage/src/gridfs.ts:353:12)
[1] at GridFSBucketWriteStream.emit (node:events:529:35)
[1] at GridFSBucketWriteStream.emit (node:domain:489:12)
[1] at finish (node:internal/streams/writable:748:10)
[1] at processTicksAndRejections (node:internal/process/task_queues:82:21)
[1] [nodemon] app crashed - waiting for file changes before starting...

Hi, this error still is problem for someone. May you help me ?

[1] TypeError: Cannot read properties of undefined (reading '_id') [1] at GridFSBucketWriteStream.emitFile (/home/cppdozer/Projects/encore/server/node_modules/multer-gridfs-storage/src/gridfs.ts:353:12) [1] at GridFSBucketWriteStream.emit (node:events:529:35) [1] at GridFSBucketWriteStream.emit (node:domain:489:12) [1] at finish (node:internal/streams/writable:748:10) [1] at processTicksAndRejections (node:internal/process/task_queues:82:21) [1] [nodemon] app crashed - waiting for file changes before starting...

I just installed mongodb module in my project and problem solved immediately.

[jasonhis]

If you are using yarn, adding this to the package.json will fix it.

  "resolutions": {
    "multer-gridfs-storage/mongodb": "^5.9.1"
  },

[anshvert]

If you are using yarn, adding this to the package.json will fix it.

  "resolutions": {
    "multer-gridfs-storage/mongodb": "^5.9.1"
  },

This Worked for me. TY

[ARedmanDodd]

I just had this same issue, however Im not using Yarn.
To resolve I needed to install mongodb v5.9.1

npm install mongodb@5.9.1

This instantly fixed the issue

[AmanSingh44]

I just had this same issue, however Im not using Yarn. To resolve I needed to install mongodb v5.9.1

npm install mongodb@5.9.1

This instantly fixed the issue

This worked for me, before trying this i didn't had the mongodb module in my project, latest version also works. Thank you, can finally upload images

[meme8383]

Resolved by #561

[meme8383]

I made a fork if you would like to use the latest versions of mongoose/mongodb, add "multer-gridfs-storage": "meme8383/multer-gridfs-storage#f82252c" to your package.json (add commit or maintain your own fork for security). Tested on mongodb 6.3.0 and mongoose 8.0.1.

[meme8383]

Fixed another issue relating to file count limits and mongodb update in commit 32d2198. Feel free to use my fork or make your own as it appears this package is no longer maintained.

[Arko0809]

If you dont have mongodb installed in your project and multer and multer-gridfs-storage installed; you will get error while installing mongodb by multer and multer-gridfs-storage.
Step 1 :
npm uninstall multer multer-gridfs-storage

Step 2 :
npm i mongodb@5.9.1 (In my case only this version worked. Check with the latest version first otherwise this is your only option)

Step 3:
npm i multer-gridfs-storage

Step 4:
npm i multer