MaxListeners Error #6401

FuelKubitox · 2021-04-04T00:52:48Z

FuelKubitox
Apr 4, 2021

I updated my Prisma Version to 2.20.1 and now i get this warning.

(node:2694015) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 beforeExit listeners added to [process]. Use emitter.setMaxListeners() to increase limit
(Use `node --trace-warnings ...` to show where the warning was created)
(node:2694015) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 exit listeners added to [process]. Use emitter.setMaxListeners() to increase limit
(node:2694015) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGINT listeners added to [process]. Use emitter.setMaxListeners() to increase limit
(node:2694015) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGUSR1 listeners added to [process]. Use emitter.setMaxListeners() to increase limit
(node:2694015) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGUSR2 listeners added to [process]. Use emitter.setMaxListeners() to increase limit
(node:2694015) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGTERM listeners added to [process]. Use emitter.setMaxListeners() to increase limit

Is there a problem with Prisma or is it just my project? I got these warning after i updated.

Answered by jharrell

May 15, 2023

Hi folks,

If you're still running into this issue, please open up a bug ticket here so we can dig into it. Thanks!

View full answer

janpio · 2021-04-04T09:10:48Z

janpio
Apr 4, 2021
Maintainer

There is no indication in the output this is coming from Prisma, and we have not seen any issues like this before - so I would say this could be from your project as well. Let us know if you find anything that tells you this might be Prisma.

0 replies

FuelKubitox · 2021-04-05T03:12:52Z

FuelKubitox
Apr 5, 2021
Author

I noticed, when i go back to version 2.19.0 then the warnings disapear. Like the warning says, it seems there are to many listeners!?

0 replies

FuelKubitox · 2021-04-05T17:40:57Z

FuelKubitox
Apr 5, 2021
Author

I find out that this is the error

`internal/modules/cjs/loader.js:883
throw err;
^

Error: Cannot find module '/home/fuel/Projekte/server/...'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
at Function.Module._load (internal/modules/cjs/loader.js:725:27)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
at internal/main/run_main_module.js:17:47 {
code: 'MODULE_NOT_FOUND',
requireStack: [ ]
}`

Im going to try to fix that.

0 replies

FuelKubitox · 2021-04-05T18:09:21Z

FuelKubitox
Apr 5, 2021
Author

I changed my configurations a bit for my project and added tslint. This is now the "node --trace-warnings ."

(node:2726030) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 beforeExit listeners added to [process]. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:390:17)
    at process.addListener (events.js:406:10)
    at process.once (events.js:437:8)
    at hookProcess (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27586:13)
    at initHooks (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27609:9)
    at new NodeEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:26911:7)
    at NewPrismaClient.getEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34057:16)
    at new NewPrismaClient (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34030:29)
    at new TokenMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/token.middleware.js:21:23)
    at new ImageMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/image.middleware.js:17:27)
(node:2726030) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 exit listeners added to [process]. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:390:17)
    at process.addListener (events.js:406:10)
    at process.once (events.js:437:8)
    at hookProcess (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27586:13)
    at initHooks (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27610:9)
    at new NodeEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:26911:7)
    at NewPrismaClient.getEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34057:16)
    at new NewPrismaClient (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34030:29)
    at new TokenMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/token.middleware.js:21:23)
    at new ImageMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/image.middleware.js:17:27)
(node:2726030) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGINT listeners added to [process]. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:390:17)
    at process.addListener (events.js:406:10)
    at process.once (events.js:437:8)
    at hookProcess (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27586:13)
    at initHooks (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27611:9)
    at new NodeEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:26911:7)
    at NewPrismaClient.getEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34057:16)
    at new NewPrismaClient (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34030:29)
    at new TokenMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/token.middleware.js:21:23)
    at new ImageMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/image.middleware.js:17:27)
(node:2726030) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGUSR1 listeners added to [process]. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:390:17)
    at process.addListener (events.js:406:10)
    at process.once (events.js:437:8)
    at hookProcess (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27586:13)
    at initHooks (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27612:9)
    at new NodeEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:26911:7)
    at NewPrismaClient.getEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34057:16)
    at new NewPrismaClient (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34030:29)
    at new TokenMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/token.middleware.js:21:23)
    at new ImageMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/image.middleware.js:17:27)
(node:2726030) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGUSR2 listeners added to [process]. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:390:17)
    at process.addListener (events.js:406:10)
    at process.once (events.js:437:8)
    at hookProcess (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27586:13)
    at initHooks (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27613:9)
    at new NodeEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:26911:7)
    at NewPrismaClient.getEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34057:16)
    at new NewPrismaClient (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34030:29)
    at new TokenMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/token.middleware.js:21:23)
    at new ImageMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/image.middleware.js:17:27)
(node:2726030) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGTERM listeners added to [process]. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:390:17)
    at process.addListener (events.js:406:10)
    at process.once (events.js:437:8)
    at hookProcess (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27586:13)
    at initHooks (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:27614:9)
    at new NodeEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:26911:7)
    at NewPrismaClient.getEngine (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34057:16)
    at new NewPrismaClient (/home/fuel/Projekte/kuhl-server/node_modules/@prisma/client/runtime/index.js:34030:29)
    at new TokenMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/token.middleware.js:21:23)
    at new ImageMiddleware (/home/fuel/Projekte/kuhl-server/dist/middleware/image.middleware.js:17:27)

0 replies

FuelKubitox · 2021-04-06T15:23:01Z

FuelKubitox
Apr 6, 2021
Author

Any solutions? Switched back to 2.19.0 for now.

0 replies

FuelKubitox · 2021-04-12T02:15:23Z

FuelKubitox
Apr 12, 2021
Author

Can i get an answer please. Just want to know how i can fix this or do i have to wait for the next update?

0 replies

eiiot · 2022-05-17T01:34:36Z

eiiot
May 17, 2022

Did you ever fix this? I'm having the same issue now, on v3.14.0

0 replies

SreejithNS · 2022-08-14T18:59:27Z

SreejithNS
Aug 14, 2022

Facing the same error in prisma@4.2.1, any workarounds yet?

1 reply

jharrell May 15, 2023
Collaborator

Hi folks,

If you're still running into this issue, please open up a bug ticket here so we can dig into it. Thanks!

Answer selected by jharrell

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MaxListeners Error #6401

FuelKubitox Apr 4, 2021

Replies: 8 comments · 1 reply

janpio Apr 4, 2021 Maintainer

FuelKubitox Apr 5, 2021 Author

FuelKubitox Apr 5, 2021 Author

FuelKubitox Apr 5, 2021 Author

FuelKubitox Apr 6, 2021 Author

FuelKubitox Apr 12, 2021 Author

eiiot May 17, 2022

SreejithNS Aug 14, 2022

jharrell May 15, 2023 Collaborator

FuelKubitox
Apr 4, 2021

Replies: 8 comments 1 reply

janpio
Apr 4, 2021
Maintainer

FuelKubitox
Apr 5, 2021
Author

FuelKubitox
Apr 5, 2021
Author

FuelKubitox
Apr 5, 2021
Author

FuelKubitox
Apr 6, 2021
Author

FuelKubitox
Apr 12, 2021
Author

eiiot
May 17, 2022

SreejithNS
Aug 14, 2022

jharrell May 15, 2023
Collaborator