666ghj/MiroFish · error · ValueError

不支持的平台: {platform}

Error message

不支持的平台: {platform}

What it means

Raised in SimulationManager.get_profiles: after defaulting platform from the simulation state, the value must be exactly 'twitter' or 'reddit'. Anything else raises ValueError('不支持的平台: ...'). This guards the downstream file selection (twitter_profiles.csv vs reddit_profiles.json) which only implements those two platforms.

Source

Thrown at backend/app/services/simulation_manager.py:511

                
                state = self._load_simulation_state(sim_id)
                if state:
                    if project_id is None or state.project_id == project_id:
                        simulations.append(state)
        
        return simulations
    
    def get_profiles(self, simulation_id: str, platform: str = None) -> List[Dict[str, Any]]:
        """获取模拟的Agent Profile"""
        state = self._load_simulation_state(simulation_id)
        if not state:
            raise ValueError(f"模拟不存在: {simulation_id}")

        if platform is None:
            platform = state.get_default_platform()

        if platform not in {"twitter", "reddit"}:
            raise ValueError(f"不支持的平台: {platform}")

        sim_dir = self._get_simulation_dir(simulation_id)
        profile_path = os.path.join(
            sim_dir,
            "twitter_profiles.csv" if platform == "twitter" else "reddit_profiles.json",
        )
        
        if not os.path.exists(profile_path):
            return []

        if platform == "twitter":
            import csv

            with open(profile_path, 'r', encoding='utf-8', newline='') as f:
                return list(csv.DictReader(f))

        with open(profile_path, 'r', encoding='utf-8') as f:
            return json.load(f)

View on GitHub (pinned to b5b53acc57)

Solutions

1. Pass platform='twitter' or 'reddit' exactly (lowercase), or omit it to use the simulation's default.
2. If state's default platform is invalid legacy data, fix/normalize the stored value (migration or manual edit) to twitter/reddit.
3. Add the missing platform to the backend: extend the set, add its profile file format in get_profiles, and its runner script path.
4. Normalize input with platform.strip().lower() at the API boundary.

Example fix

# before
profiles = manager.get_profiles(sim_id, platform=request.query_params['platform'])
# after
platform = request.query_params.get('platform', '').strip().lower() or None
if platform not in (None, 'twitter', 'reddit'):
    raise HTTPException(400, f'unsupported platform: {platform}')
profiles = manager.get_profiles(sim_id, platform=platform)

platform = (platform or '').strip().lower() or None
if platform not in (None, 'twitter', 'reddit'):
    raise HTTPException(400, f'unsupported platform: {platform}')

def is_supported_platform(platform: object) -> bool:
    return isinstance(platform, str) and platform.strip().lower() in {'twitter', 'reddit'}

When it happens

Trigger: Caller passes platform='weibo'/'discord'/etc.; persisted state's default platform is a legacy or invalid value; case mismatch ('Twitter'); platform key missing from state and get_default_platform returning something unexpected.

Common situations: New platform added to the frontend but not the backend; stored simulation state from an older version with a different platform vocabulary; case-sensitive comparison catching 'Twitter'; client sending a platform the API never supported.

Related errors

• 模拟不存在: {simulation_id}
• 启用图谱记忆更新时必须提供 graph_id
• t('step5.selectAgentFirst')
• graph_id is required
• At least one text chunk is required

AI-assisted analysis of 666ghj/MiroFish@b5b53acc57 (2026-08-14). Data as JSON: /api/errors/66d9b67862568e59. Report an issue: GitHub.