xtekky/gpt4free · error · MissingRequirementsError

a2wsgi is required for GUI. Install it with: pip install a2w

Error message

a2wsgi is required for GUI. Install it with: pip install a2wsgi

What it means

Error "a2wsgi is required for GUI. Install it with: pip install a2wsgi" thrown in xtekky/gpt4free.

Source

Thrown at g4f/api/__init__.py:456

                "request_headers": _sanitize_headers(dict(request.headers)),
                "request_body": req_body,
                "response_headers": resp_headers_log,
                "response_body": resp_body,  # None for SSE until iterator completes
            }
        )
        _request_log.append(log_entry)

        return response

    api = Api(app)

    api.register_routes()
    api.register_authorization()
    api.register_validation_exception_handler()

    if AppConfig.gui:
        if not has_a2wsgi:
            raise MissingRequirementsError(
                "a2wsgi is required for GUI. Install it with: pip install a2wsgi"
            )
        gui_app = WSGIMiddleware(
            get_gui_app(AppConfig.demo, AppConfig.timeout, AppConfig.stream_timeout)
        )
        app.mount("/", gui_app)

    if AppConfig.ignored_providers:
        for provider in AppConfig.ignored_providers:
            if provider in ProviderUtils.convert:
                ProviderUtils.convert[provider].working = False

    return app


def create_app_debug():
    g4f.debug.logging = True
    return create_app()

View on GitHub (pinned to 973504e177)

Solutions

1. Install a2wsgi: pip install a2wsgi.

When it happens

Trigger: Thrown at g4f/api/__init__.py:456 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of xtekky/gpt4free@973504e177 (2026-08-14). Data as JSON: /api/errors/2d855951e41b963f. Report an issue: GitHub.