Error when triggering a webhook

Questions
1

Can anyone help me fix this error, it happens on a webhook trigger, seems a bit odd:

{
  "errorMessage": "Internal error",
  "errorDetails": {},
  "n8nDetails": {
    "n8nVersion": "1.50.1 (Self Hosted)",
    "binaryDataMode": "default",
    "stackTrace": [
      "Error: ENOENT: no such file or directory, stat '/tmp/6376f5b5d07f44768e2008db4'",
      "    at stat (node:internal/fs/promises:1032:18)",
      "    at BinaryDataService.copyBinaryFile (/usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/BinaryData/BinaryData.service.js:68:30)",
      "    at copyBinaryFile (/usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/NodeExecuteFunctions.js:856:12)",
      "    at Object.copyBinaryFile (/usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/NodeExecuteFunctions.js:2180:61)",
      "    at Webhook.handleFormData (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Webhook/Webhook.node.js:330:57)",
      "    at Webhook.webhook (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Webhook/Webhook.node.js:190:20)",
      "    at Workflow.runWebhook (/usr/local/lib/node_modules/n8n/node_modules/n8n-workflow/dist/Workflow.js:661:15)",
      "    at Object.executeWebhook (/usr/local/lib/node_modules/n8n/dist/WebhookHelpers.js:220:33)"
    ]
  }
}
2

It looks like your topic is missing some important information. Could you provide the following if applicable.

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
3

Would it be possible to share the form-data request with us?

4

I don’t have the full data but I can tell you that my client is sending a post request with the following text in the body that causes it to fail, note the text is being json encoded before sending:

"skip the lesson part for ## 模块 1: 解剖学与生理学

子模块 1.2: 组织损伤与修复

课程 3: 常见病理及其对组织的影响

I only need the review questions and answer for this lesson.
please output in the following format

Review Questions with Scene Suggestions

  1. 以下哪种疾病属于炎症性疾病？(Which of the following is an inflammatory disease?)
    • A. 骨质疏松症 (Osteoporosis)
    • B. 关节炎 (Arthritis)
    • C. 椎间盘退行性疾病 (Degenerative Disc Disease)
    • D. 系统性红斑狼疮 (Systemic Lupus Erythematosus)
    • 答案: B. 关节炎 (Arthritis)
    • 正确答案的简单解释（包含记忆技巧): 关节炎是一种炎症性疾病，导致关节的炎症和疼痛。记忆技巧：想象关节炎是关节的炎症，导致红肿和疼痛。
    • 错误选项的简单解释: 骨质疏松症是退行性疾病，椎间盘退行性疾病也是退行性疾病，系统性红斑狼疮是自身免疫性疾病。
      视觉建议:
      显示关节炎的动画，展示关节炎的过程和影响（3-5秒）。
  2. 以下哪种疾病属于退行性疾病？(Which of the following is a degenerative disease?)
    • A. 关节炎 (Arthritis)
    • B. 肌腱炎 (Tendinitis)
    • C. 骨质疏松症 (Osteoporosis)
    • D. 系统性红斑狼疮 (Systemic Lupus Erythematosus)
    • 答案: C. 骨质疏松症 (Osteoporosis)
    • 正确答案的简单解释（包含记忆技巧): 骨质疏松症是一种退行性疾病，导致骨密度降低和骨骼脆弱。记忆技巧：想象骨质疏松症是骨头变得脆弱和易碎。
    • 错误选项的简单解释: 关节炎是炎症性疾病，肌腱炎是炎症性疾病，系统性红斑狼疮是自身免疫性疾病。
      视觉建议:
      显示骨质疏松症的动画，展示骨密度降低的过程（3-5秒）。
  3. 以下哪种疾病属于感染性疾病？(Which of the following is an infectious disease?)
    • A. 关节炎 (Arthritis)
    • B. 肌腱炎 (Tendinitis)
    • C. 细菌性肌炎 (Bacterial Myositis)
    • D. 系统性红斑狼疮 (Systemic Lupus Erythematosus)
    • 答案: C. 细菌性肌炎 (Bacterial Myositis)
    • 正确答案的简单解释（包含记忆技巧): 细菌性肌炎是一种感染性疾病，由细菌引起的肌肉感染。记忆技巧：想象细菌性肌炎是细菌感染肌肉，导致炎症和疼痛。
    • 错误选项的简单解释: 关节炎是炎症性疾病，肌腱炎是炎症性疾病，系统性红斑狼疮是自身免疫性疾病。"
5

Considering that the error is happening in Webhook.handleFormData, the Content-Type header is set to multipart/form-data, and not application/json.
maybe check with them the exact format of the payload, and make sure that the format matches the Content-Type header being sent.

6

I’ve just checked the payload and set correctly, it works with English but not with Chinese, the node doesn’t seem to want to handle it, even if I set Content-Type: application/json; charset=utf-8

7

can you share the request in a curl format to be able to reproduce this?

8

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