{"record":{"id":"6613b2c5bc86aff2","repo":"langflow-ai/langflow","slug":"settings-service-is-already-initialized-this-indi","errorCode":null,"errorMessage":"Settings service is already initialized. This indicates potential race conditions with settings initialization. Ensure the settings service is not created during module loading.","messagePattern":"Settings service is already initialized\\. This indicates potential race conditions with settings initialization\\. Ensure the settings service is not created during module loading\\.","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"src/backend/base/langflow/__main__.py","lineNumber":415,"sourceCode":"        None,\n        help=\"Defines the polling interval for the webhook.\",\n        show_default=False,\n    ),\n    ssl_cert_file_path: str | None = typer.Option(\n        None, help=\"Defines the SSL certificate file path.\", show_default=False\n    ),\n    ssl_key_file_path: str | None = typer.Option(None, help=\"Defines the SSL key file path.\", show_default=False),\n) -> None:\n    \"\"\"Run Langflow.\"\"\"\n    if env_file:\n        if is_settings_service_initialized():\n            err = (\n                \"Settings service is already initialized. This indicates potential race conditions \"\n                \"with settings initialization. Ensure the settings service is not created during \"\n                \"module loading.\"\n            )\n            # i.e. ensures the env file is loaded before the settings service is initialized\n            raise ValueError(err)\n        load_dotenv(env_file, override=True)\n\n    # Set and normalize log level, with precedence: cli > env > default\n    log_level = (log_level or os.environ.get(\"LANGFLOW_LOG_LEVEL\") or \"info\").lower()\n    os.environ[\"LANGFLOW_LOG_LEVEL\"] = log_level\n\n    configure(log_level=log_level, log_file=log_file, log_rotation=log_rotation)\n\n    # Create progress indicator (show verbose timing if log level is DEBUG)\n    verbose = log_level == \"debug\"\n    progress = create_langflow_progress(verbose=verbose)\n\n    # Step 0: Initializing Langflow\n    with progress.step(0):\n        logger.debug(f\"Loading config from file: '{env_file}'\" if env_file else \"No env_file provided.\")\n        set_var_for_macos_issue()\n        settings_service = get_settings_service()\n","sourceCodeStart":397,"sourceCodeEnd":433,"githubUrl":"https://github.com/langflow-ai/langflow/blob/976ec789d2886a86de109c044d089d68e96c9a35/src/backend/base/langflow/__main__.py#L397-L433","documentation":"When 'langflow run --env-file <path>' is passed, the CLI must load the dotenv file before the settings service reads configuration. If the settings service is already initialized at that point (some import touched it during module load), the CLI raises ValueError because applying the env file now would be too late and silently ignored. It is a race-condition guard that makes 'my .env had no effect' impossible to miss.","triggerScenarios":"Passing --env-file while an imported module already called get_settings_service() at import time; running the CLI through a wrapper that imports langflow components before invoking run; plugins or conftest code initializing settings early.","commonSituations":"Custom entry points that 'import langflow' (triggering settings creation) before delegating to the CLI; test harnesses reusing the process; third-party code calling get_settings_service() at module scope.","solutions":["Remove module-level get_settings_service() calls from your own code — defer settings access into functions.","Load the env file yourself before anything imports langflow: call load_dotenv(path, override=True) at the top of your entry script, or export the variables into the process environment.","If a third-party import is the culprit, import it lazily inside the run path instead of at module top."],"exampleFix":"# before: module-level settings access forces early init\nfrom langflow.services.settings.utils import get_settings_service\nSETTINGS = get_settings_service()  # then `langflow run --env-file .env` fails\n# after: defer\nfrom langflow.services.settings.utils import get_settings_service\ndef settings():\n    return get_settings_service().settings","handlingStrategy":"validation","validationCode":"# at the very top of your custom entry point, BEFORE importing langflow modules:\nfrom dotenv import load_dotenv\nload_dotenv(\".env\", override=True)\nimport langflow  # now safe: env is loaded before settings init","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Never call get_settings_service() at module scope.","In wrappers, load dotenv before any langflow import instead of relying on --env-file.","Grep your code for 'get_settings_service()' outside function bodies when adding entry points."],"tags":["startup","env-file","settings","race-condition","cli"],"backgroundTag":null,"analyzedSha":"976ec789d2886a86de109c044d089d68e96c9a35","analyzedAt":"2026-08-14T18:23:12.227Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}