# Crash on Deploy, Error: Already disposing

**URL:** <https://discourse.nodered.org/t/crash-on-deploy-error-already-disposing/57978>\
**Category:** General\
**Created:** [8 February 2022 08:56 UTC](https://discourse.nodered.org/t/crash-on-deploy-error-already-disposing/57978 "2022-02-08T08:56:30Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Twisty](https://avatars.discourse-cdn.com/v4/letter/t/7ab992/32.png) [@Twisty](https://discourse.nodered.org/u/Twisty)\
**Post date:** [8 February 2022 08:56 UTC](https://discourse.nodered.org/t/crash-on-deploy-error-already-disposing/57978/1 "2022-02-08T08:56:30Z")

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Hi, I´ve been having issues recently with Node-Red occasionally (very often but not every time) crashing with this error message:

```auto
[error] Error: Already disposing
    at OPCUACertificateManager.<anonymous> (C:\Users\Marcus Hallberg\.node-red\node_modules\node-opcua-pki\dist\pki\certificate_manager.js:464:23)
    at Generator.next (<anonymous>)
    at C:\Users\Marcus Hallberg\.node-red\node_modules\node-opcua-pki\dist\pki\certificate_manager.js:31:71
    at new Promise (<anonymous>)
    at __awaiter (C:\Users\Marcus Hallberg\.node-red\node_modules\node-opcua-pki\dist\pki\certificate_manager.js:27:12)
    at OPCUACertificateManager.dispose (C:\Users\Marcus Hallberg\.node-red\node_modules\node-opcua-pki\dist\pki\certificate_manager.js:462:16)
    at OPCUACertificateManager.<anonymous> (C:\Users\Marcus Hallberg\.node-red\node_modules\node-opcua-certificate-manager\dist\certificate_manager.js:58:38)
    at Generator.next (<anonymous>)
    at C:\Users\Marcus Hallberg\.node-red\node_modules\node-opcua-certificate-manager\dist\certificate_manager.js:8:71
    at new Promise (<anonymous>)

```

Is this familiar to anyone? I had a hard time finding any documentation on this type of error and I keep having it after several modifications to the flow, restarts of Node-red and computer reboots.  
Any and all help is highly appreciated!

-Marcus

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<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [8 February 2022 09:16 UTC](https://discourse.nodered.org/t/crash-on-deploy-error-already-disposing/57978/2 "2022-02-08T09:16:45Z")

</div>

the logs indicate OPC UA

Assuming it is `node-red-contrib-opcua` then ...

Did you search the [issues in the node-red-contrib-opcua repository](https://github.com/mikakaraila/node-red-contrib-opcua/issues?q=disposing)?

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<div class="post-metadata">

**Author:** ![Twisty](https://avatars.discourse-cdn.com/v4/letter/t/7ab992/32.png) [@Twisty](https://discourse.nodered.org/u/Twisty)\
**Post date:** [8 February 2022 14:49 UTC](https://discourse.nodered.org/t/crash-on-deploy-error-already-disposing/57978/3 "2022-02-08T14:49:03Z")

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Thanks for the tip, I read through and found one mention of a similar error message, but no solution I´m afraid..

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [9 April 2022 14:49 UTC](https://discourse.nodered.org/t/crash-on-deploy-error-already-disposing/57978/4 "2022-04-09T14:49:24Z")

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