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Hello MongoDB Community,

I’m currently working on setting up client-side field level encryption (CSFLE) using Node.js, Express, and Mongoose, following the tutorial for Use Automatic Client-Side Field Level Encryption with AWS I’ve ensured that all the steps recommended in the tutorial have been followed, and I’m running a MongoDB Enterprise server.

However, when I try to insert a document using the secure client, I encounter the following error:

Error: MongoServerError: BSON field 'FindCommandRequest.jsonSchema' is an unknown field. This command may be meant for a mongocryptd process.

Has anyone encountered this issue before, or does anyone have insights on how to resolve this error?

Any help or guidance would be greatly appreciated!

Thank you!

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Hmmm… Any chance you can post a link to your code or your itself code here? I can’t promise to solve it, but I’m curious to take a look and see if I can spot or reproduce the problem.

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By the way i changed my source code after that and i would love to share that because i saw a few people have problems to figure out how they can structure regularClients and secureClients with their needed models to those connections. Is their a possibility to make a request to add this to the documenation links for code examples?

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The code was the same as you can find it in the gothub example. But i got it resolved. Somehow I didn’t saw that the mongocryptd process got blocked as process by the system so it was not running. I got it working after i sae that. So the solution for that is that the mongocrypt process has to be started.

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Very good. You can also use the shared library, crypt-shared, which simply loads at runtime (you may need to make sure your OS allows it to load if your OS blocks binaries).

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Thank you for the tip!

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