BerriAI/litellm · error · ValueError

Error compiling prompt '{prompt_id}': {e}

Error message

Error compiling prompt '{prompt_id}': {e}

What it means

ValueError wrapper at the end of _compile_prompt_helper: any exception during GitLab load, template rendering (including Jinja errors), metadata extraction, or message assembly is re-raised with this message. It is the funnel for errors 467-470 during completion-time prompt compilation.

Source

Thrown at litellm/integrations/gitlab/gitlab_prompt_manager.py:520

            for param in [
                "temperature",
                "max_tokens",
                "top_p",
                "frequency_penalty",
                "presence_penalty",
            ]:
                if param in prompt_metadata:
                    optional_params[param] = prompt_metadata[param]

            return PromptManagementClient(
                prompt_id=prompt_id,
                prompt_template=messages,
                prompt_template_model=template_model,
                prompt_template_optional_params=optional_params,
                completed_messages=None,
            )
        except Exception as e:
            raise ValueError(f"Error compiling prompt '{prompt_id}': {e}")

    async def async_compile_prompt_helper(
        self,
        prompt_id: str | None,
        prompt_variables: dict | None,
        dynamic_callback_params: StandardCallbackDynamicParams,
        prompt_spec: PromptSpec | None = None,
        prompt_label: str | None = None,
        prompt_version: int | None = None,
    ) -> PromptManagementClient:
        """
        Async version of compile prompt helper. Since GitLab operations use sync client,
        this simply delegates to the sync version.
        """
        if prompt_id is None:
            raise ValueError("prompt_id is required for GitLab prompt manager")

        return self._compile_prompt_helper(

View on GitHub (pinned to 6c2dcb801b)

Solutions

1. Read the chained text after the colon — it names the true failure
2. For Jinja errors, test the template locally with jinja2.Environment().from_string(...).render(**vars)
3. Supply all variables the template references via prompt_variables
4. For GitLab fetch errors, follow fixes for errors 460-462/467

try:
    pmc = handler._compile_prompt_helper(prompt_id, spec, variables, params)
except ValueError as e:
    inner = str(e)
    if "Failed to load" in inner:
        raise RuntimeError("GitLab fetch failed — check token/network") from e
    if "not found" in inner:
        raise LookupError(inner) from e
    raise

When it happens

Trigger: A completion call with prompt_id where the GitLab fetch fails (auth/network/404), Jinja rendering raises on bad syntax or missing variables, or the .prompt frontmatter is malformed so metadata parsing breaks.

Common situations: Prompt template references a variable not supplied in prompt_variables; .prompt file edited with invalid Jinja syntax; expired GitLab token at runtime; production hitting this only after a repo change while local worked.

Related errors

• Failed to load prompt '{encode_prompt_id(prompt_id)}' from G
• Template '{template_id}' not found
• Prompt template '{prompt_id}' not found
• prompt_id is required for GitLab prompt manager
• Gitlab configuration not found. Please set litellm.global_gi

AI-assisted analysis of BerriAI/litellm@6c2dcb801b (2026-08-15). Data as JSON: /api/errors/300b04a2dfa4c4a3. Report an issue: GitHub.