Regarding the escape characters in Webhook requests.

[v6ole]

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📝 Describe your problem

The issue encountered: In the same Webhook notification configuration, the notifications from the Monitor Group work properly, but the notifications from the General Group do not work properly;

1. I have previously searched and found that you provided an answer to a similar issue, which requires adding Content-Type: application/json; application/x-www-form-urlencoded; to the Headers or modifying the User-Agent. I have tried these in the test and they indeed solved the problem;
2. However, I found that the webhook service I am using can only support the Content-Type of application/json type, other types cannot be supported to output normally (because it is a program specified by the company to be used, so it cannot be replaced for the time being);

I look forward to a direction for processing in your spare time, thank you. 🙏

📝 Error Message(s) or Log

Monitor Group

---

General

🐻 Uptime-Kuma Version

Version: 1.23.13

💻 Operating System and Arch

WSL: ubuntu 20.04 x86

🌐 Browser

Microsoft Edge 126.0.2592.87 x64

🖥️ Deployment Environment

• Runtime: Docker version 27.0.2, build 912c1dd
• Database:
• Filesystem used to store the database on: Windows on a ssd
• number of monitors: 40

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