zed-industries/zed · error

Failed to connect to LM Studio API: {} {}

Error message

Failed to connect to LM Studio API: {} {}

What it means

Raised when the streaming chat request to LM Studio returns a non-success HTTP status before the SSE stream can be consumed. Means the server is unreachable, rejected the request, or the model is unavailable.

Source

Thrown at crates/lmstudio/src/lmstudio.rs:310

                            None
                        } else {
                            match serde_json::from_str::<ResponseStreamResult>(line) {
                                Ok(ResponseStreamResult::Ok(response)) => Some(Ok(response)),
                                Ok(ResponseStreamResult::Err { error }) => {
                                    Some(Err(anyhow!(error.message)))
                                }
                                Err(error) => Some(Err(anyhow!(error))),
                            }
                        }
                    }
                    Err(error) => Some(Err(anyhow!(error))),
                }
            })
            .boxed())
    } else {
        let mut body = String::new();
        response.body_mut().read_to_string(&mut body).await?;
        anyhow::bail!(
            "Failed to connect to LM Studio API: {} {}",
            response.status(),
            body,
        );
    }
}

pub async fn get_models(
    client: &dyn HttpClient,
    api_url: &str,
    api_key: Option<&str>,
    _: Option<Duration>,
    extra_headers: &CustomHeaders,
) -> Result<Vec<ModelEntry>> {
    let uri = format!("{api_url}/models");
    let mut request_builder = HttpRequest::builder()
        .method(Method::GET)
        .uri(uri)

View on GitHub (pinned to 5a9b9558db)

Solutions

1. Ensure the LM Studio server is started and reachable at the configured URL
2. Verify the model name matches one loaded in LM Studio
3. Retry after confirming server health

When it happens

Trigger: Thrown at crates/lmstudio/src/lmstudio.rs:451 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of zed-industries/zed@5a9b9558db (2026-08-20). Data as JSON: /api/errors/104a124dc38059a5. Report an issue: GitHub.