zellij-org/zellij · error · anyhow::Error

Worker name (" ") should not be specified in message to…

Error message

Worker name ("{}") should not be specified in message to plugin

What it means

Error "Worker name ("{}") should not be specified in message to plugin" thrown in zellij-org/zellij.

Solutions

1. Set the worker name when posting a message to a worker; omit it when messaging a plugin.
2. Check the plugin's post_message call targets the right destination type.

When it happens

Trigger: Occurs at zellij-server/src/plugins/zellij_exports.rs:2602 when the operation fails: "Worker name (\"{}\") should not be specified in message to plugin". Currently there is no defensive handling preventing or contextualizing this failure before it surfaces.

Common situations: Plugin code misusing the worker messaging API.

AI-assisted analysis of zellij-org/zellij@5cb5df5cce (2026-08-19). Data as JSON: /api/errors/d765b45d48ebf50f. Report an issue: GitHub.

Appendix: source

Thrown at zellij-server/src/plugins/zellij_exports.rs:2602

        ));
}

fn post_message_to(env: &PluginEnv, plugin_message: PluginMessage) -> Result<()> {
    let worker_name = plugin_message
        .worker_name
        .ok_or(anyhow!("Worker name not specified in message to worker"))?;
    env.senders
        .send_to_plugin(PluginInstruction::PostMessagesToPluginWorker(
            env.plugin_id,
            env.client_id,
            worker_name,
            vec![(plugin_message.name, plugin_message.payload)],
        ))
}

fn post_message_to_plugin(env: &PluginEnv, plugin_message: PluginMessage) -> Result<()> {
    if let Some(worker_name) = plugin_message.worker_name {
        return Err(anyhow!(
            "Worker name (\"{}\") should not be specified in message to plugin",
            worker_name
        ));
    }
    env.senders
        .send_to_plugin(PluginInstruction::PostMessageToPlugin(
            env.plugin_id,
            env.client_id,
            plugin_message.name,
            plugin_message.payload,
        ))
}

fn hide_self(env: &PluginEnv) -> Result<()> {
    env.senders
        .send_to_screen(ScreenInstruction::SuppressPane(
            PaneId::Plugin(env.plugin_id),
            env.client_id,

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