Custom HTTP integration returns error code 422

Platform

Desktop - Windows

Describe the bug

Config Json:

follow-integration-settings-2025-10-21.json

Log:

main.log

Description:

I encountered an HTTP CODE 422 error when trying to connect to N8N using a custom HTTP integration. After testing, the error occurs when the Body contains parameters like the following:

• [summary]

• [content_html]

• [content_markdown]

From the log, it seems that \n is causing the problem

Entry ID

https://spring.io/blog/2025/10/21/spring-ws-4-0-16-available-now

Relevant Information

Other Logs

[content_html]

main.log

[content_markdown]

main.log

Reproduction Video

No response

Environment

Environment

App Version: 0.7.0
OS: Windows
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Folo/0.7.0 Chrome/138.0.7204.97 Electron/37.2.0 Safari/537.36
Env: electron
Browser: Chrome
Session Trace Id: KYd021o_ytkw-lTqW-PZf
Mode: production
Renderer: 0.7.0

Windows Environment

Version Windows 11 Home Chinese Edition

Version number 24H2

Installation date ‎2025-‎9-‎9

Operating system version 26100.6899

Experience the Windows Feature Experience Pack 1000.26100.253.0

Validations

• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• This issue is valid

Contributions

• I am willing to submit a PR to fix this issue
• I am willing to submit a PR with failing tests (actually just go ahead and do it, thanks!)

Start by reviewing the attached follow-integration-settings-2025-10-21.json and main.log files, focusing on requests whose body contains [summary], [content_html], or [content_markdown]. Reproduce the custom HTTP integration on Windows with the Spring blog entry, then verify that equivalent requests no longer fail with HTTP 422.