api upload files but encounter "The server encountered an internal error and was unable to complete your request"

[awei139]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

I have published my workflow on the Dify website, and I want to use the API to call my workflow. Therefore, I carefully read the API documentation and wrote the following code.

`import requests
import json

url = 'https://api.dify.ai/v1/chat-messages'
headers = {
'Authorization': 'Bearer app-cvAWPSTZCupZNuJre2seXKFs',
'Content-Type': 'application/json',
}

proxies = {
'http': 'socks5://127.0.0.1:7890',
'https': 'socks5://127.0.0.1:7890'
}

data = {
"inputs": {
"selection": "Fraud detection",
"input": [
{
"type": "pdf",
"transfer_method": "local_file",
"url": './test.pdf',
'upload_file_id':2
}
]
},
"query": "start",
"response_mode": "streaming",
"conversation_id": "",
"user": "abc-123",
}

response = requests.post(url, headers=headers, data=json.dumps(data),proxies=proxies)`

However, after running it, I was unable to get the desired result, and encountered the following error.
{"code": "internal_server_error", "message": "The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.", "status": 500}

I would like to know where the issue lies—whether it's a problem with the code or the website.

Similarly, I have looked through many issues with the same error message, but they are either too old or not related to my specific problem. My error remains unresolved.

Since I am using the website's service, it should not be an issue related to version differences (I assume). This is because I encountered the same error after deploying it locally as well...

2. Additional context or comments

No response