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

Failed to serialize user configuration

Error message

Failed to serialize user configuration: {:?}

What it means

Error "Failed to serialize user configuration: {:?}" thrown in zellij-org/zellij.

Solutions

1. Check the attached error for the underlying serialization failure and fix the offending data.
2. Ensure plugin/wasm artifacts and zellij versions are compatible.

When it happens

Trigger: Occurs at zellij-server/src/plugins/plugin_loader.rs:226 when the operation fails: "Failed to serialize user configuration: {:?}". Currently there is no defensive handling preventing or contextualizing this failure before it surfaces.

Common situations: Typically version skew, corrupted data, or an unexpected payload shape.

AI-assisted analysis of zellij-org/zellij@5cb5df5cce (2026-08-19). Data as JSON: /api/errors/4e2c9160ebd7c13b. Report an issue: GitHub.

Appendix: source

Thrown at zellij-server/src/plugins/plugin_loader.rs:226

        )));
        self.plugin_map.insert(
            self.plugin_id,
            self.client_id,
            plugin.clone(),
            subscriptions,
            workers,
        );

        start_function
            .call(&mut plugin.lock().unwrap().store, ())
            .with_context(err_context)?;

        let protobuf_plugin_configuration: ProtobufPluginConfiguration = self
            .plugin_config
            .initial_userspace_configuration
            .clone()
            .try_into()
            .map_err(|e| anyhow!("Failed to serialize user configuration: {:?}", e))?;
        let protobuf_bytes = protobuf_plugin_configuration.encode_to_vec();
        wasi_write_object(plugin.lock().unwrap().store.data(), &protobuf_bytes)
            .with_context(err_context)?;
        load_function
            .call(&mut plugin.lock().unwrap().store, ())
            .with_context(err_context)?;

        Ok(())
    }
    pub fn create_plugin_environment(
        &self,
        module: Module,
    ) -> Result<(Store<PluginEnv>, Instance)> {
        let err_context = || {
            format!(
                "Failed to create instance, plugin env and subscriptions for plugin {}",
                self.plugin_id
            )

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