Webhook of quotation does not trigger

Hello !
I tried to trigger a webhook after saving a quotation but it did not work. Since that, I checked the error log and it shows this message:

This was the data I want to send:

I tried sending my own request to the webhook, however it worked very well. Any ideas why I receive this problem and how to solve it? Thank you in advance.

The best thing to do in this situation is to look at your server logs (the server hosting the webhook). They should be able to tell you why you’re getting a status 500 code. There’s something different between what your server is expecting and what ERPNext is sending, but it’s impossible to tell what that is without knowing more about how the webhook inputs are being processed.

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