First parameter has member 'readable' that is not a ReadableStream.

[LYouC]

Before submitting your bug report

• [ ] I believe this is a bug. I'll try to join the Continue Discord for questions
• [X] I'm not able to find an open issue that reports the same bug
• [ ] I've seen the troubleshooting guide on the Continue Docs

Relevant environment info

- OS:ubuntu-22.04 and windows11
- Continue:v0.8.43
- IDE: vscode 1.91.1
- Model: deepseek-coder
- config.json:

{
  "disableIndexing": true,

  "models": [{
    "title": "DeepSeek-v2",
    "provider": "openai",
    "model": "deepseek-coder",
    "apiBase": "https://api.deepseek.com",
    "apiType": "openai",
    "apiKey": "***",
    "useLegacyCompletionsEndpoint": false,
    "contextLength": 8192
  }],
  "tabAutocompleteOptions": {
    "template": "Please teach me what I should write in the `hole` tag, but without any further explanation and code backticks, i.e., as if you are directly outputting to a code editor. It can be codes or comments or strings. Don't provide existing & repetitive codes. If the provided prefix and suffix contain incomplete code and statement, your response should be able to be directly concatenated to the provided prefix and suffix. Also note that I may tell you what I'd like to write inside comments. \n{{{prefix}}}<hole></hole>{{{suffix}}}\n\nPlease be aware of the environment the hole is placed, e.g., inside strings or comments or code blocks, and please don't wrap your response in . You should always provide non-empty output.\n",
    "useCache": true,
    "maxPromptTokens": 2048
  },
  "tabAutocompleteModel": {
    "title": "DeepSeek-V2",
    "model": "deepseek-coder",
    "apiKey": "***",
    "contextLength": 8192,
    "apiBase": "https://api.deepseek.com",
    "completionOptions": {
      "maxTokens": 4096,
      "temperature": 0,
      "topP": 1,
      "presencePenalty": 0,
      "frequencyPenalty": 0
    },
    "provider": "openai",
    "useLegacyCompletionsEndpoint": false
  },
  "customCommands": [
    {
      "name": "test",
      "prompt": "{{{ input }}}\n\nWrite a comprehensive set of unit tests for the selected code. It should setup, run tests that check for correctness including important edge cases, and teardown. Ensure that the tests are complete and sophisticated. Give the tests just as chat output, don't edit any file.",
      "description": "Write unit tests for highlighted code"
    }
  ]
  // "allowAnonymousTelemetry": true
}

### Description

When I try to use the dialogue box on the left for conversation, it outputs the following error.
First parameter has member 'readable' that is not a ReadableStream.

the error msg like this (i have upload the image  ,but it did not display.)
<img width="508" alt="image" src="https://github.com/user-attachments/assets/dee4ae00-29ed-4fc3-900b-508e88e2ebf2">

I'm not quite sure whether this is an issue with the DeepSeek API or with the continuation.

### To reproduce

1. chat with the left dialogue

### Log output

_No response_

[bayuncao]

@LYouC Hi, I seem to have found the cause of the problem. Check the plugins you have installed for your vscode for other AI code helpers like Fitten, you need to disable them and then the error won't show up anymore.

[LYouC]

@LYouC Hi, I seem to have found the cause of the problem. Check the plugins you have installed for your vscode for other AI code helpers like Fitten, you need to disable them and then the error won't show up anymore.

Thank you, this method worked.

[kangziya]

Indeed, I had installed the Fitten plugin in VSCode. After uninstalling the Fitten plugin, Continue was able to work normally. However, this is a serious issue, and I hope the developers will resolve it promptly.