oraios/serena · error · SolidLSPException

Error processing request {method} with params: {params}

Error message

Error processing request {method} with params:
{params}

What it means

SolidLSPException raised by send_request (src/solidlsp/ls_process.py:385) after the language server returned an error result for an LSP request, even after retrying on Content-Modified. The original LSP error is attached as `cause` (`result.error`). It means the server itself rejected or failed to process the request.

Source

Thrown at src/solidlsp/ls_process.py:385

        """
        result = self._send_request_once(method, params)
        if not result.is_error():
            log.debug("Returning result:\n%s", result.payload)
            return result.payload

        if method in self._content_modified_retry_methods:
            for attempt in range(2, _CONTENT_MODIFIED_MAX_ATTEMPTS + 1):
                is_content_modified = isinstance(result.error, LSPError) and result.error.code == LSPErrorCodes.ContentModified
                if not is_content_modified:
                    break
                log.info("Request %s got ContentModified (-32801); retrying (%d/%d)", method, attempt, _CONTENT_MODIFIED_MAX_ATTEMPTS)
                time.sleep(_CONTENT_MODIFIED_RETRY_DELAY)
                result = self._send_request_once(method, params)
                if not result.is_error():
                    log.debug("Returning result:\n%s", result.payload)
                    return result.payload

        raise SolidLSPException(f"Error processing request {method} with params:\n{params}", cause=result.error) from result.error

    @abstractmethod
    def _send_payload(self, payload: StringDict) -> None:
        """
        Send the given payload to the server
        """

    def on_request(self, method: str, cb: Callable[[Any], Any]) -> None:
        """
        Register the callback function to handle requests from the server to the client for the given method
        """
        self.on_request_handlers[method] = cb

    def on_notification(self, method: str, cb: Callable[[Any], None]) -> None:
        """
        Register the callback function to handle notifications from the server to the client for the given method
        """
        self.on_notification_handlers[method] = cb

View on GitHub (pinned to 7fcbca7e62)

Solutions

1. Inspect the `cause` attribute of the exception to see the actual LSP error message from the server.
2. Ensure the language server is fully started/initialized before sending requests.
3. Retry after a short delay if the cause is 'Content modified' (server is re-indexing).
4. Verify the requested method/capability is supported by the configured language server.

Example fix

// before
result = ls.request_document_symbols(file_path)
// after
try:
    result = ls.request_document_symbols(file_path)
except SolidLSPException as e:
    log.warning("LSP request failed: %s", e.cause)
    time.sleep(1.0)
    result = ls.request_document_symbols(file_path)

assert ls.is_running(), "language server not started"
# only request capabilities the server advertises
if not ls.server_capabilities.get("documentSymbolProvider"):
    raise SkipCapability("documentSymbol unsupported")

def lsp_error_has(cause: str) -> bool:
    return "Content modified" in cause

for attempt in range(3):
    try:
        return ls.request_document_symbols(path)
    except SolidLSPException as e:
        if "Content modified" in str(e.cause) and attempt < 2:
            time.sleep(1.0)
            continue
        raise

When it happens

Trigger: Calling any request-style API (request_document_symbols, request_definition, request_hover, etc.) when the server replies with a JSON-RPC error such as 'Content modified' repeatedly, 'Server not initialized', method not supported, or an internal server error.

Common situations: Sending requests before server initialization completes; editing files faster than the server re-indexes (repeated Content-Modified); requesting capabilities the language server doesn't support; server internal crash on a malformed request.

Related errors

• Unhandled document change kind: {change}; Please report to S
• Unhandled document change format: {change}; Please report to
• Symbol '{name_path}' does not have a valid position in file
• Language server for {lang_server.language_id} returned no re
• Renaming symbol '{name_path}' to '{new_name}' resulted in no

AI-assisted analysis of oraios/serena@7fcbca7e62 (2026-08-29). Data as JSON: /api/errors/728a29d3afb5b6c0. Report an issue: GitHub.