DioxusLabs/dioxus · error

failed to parse config into toml: {e}

Error message

failed to parse config into toml: {e}

What it means

Serialization guard in CliSettings::save: serializing the current settings struct to pretty TOML failed, so there is no valid text to write to the global settings file. This fires when the settings state contains data TOML cannot represent; the struct itself (and the underlying serde error) are the inputs at fault, and the error is logged before bailing.

Source

Thrown at packages/cli/src/settings.rs:80

            return None;
        };

        let Some(data) = toml::from_str::<CliSettings>(&data).ok() else {
            warn!("failed to parse global settings file");
            return None;
        };

        Some(data)
    }

    /// Save the current structure to the global settings toml.
    /// This does not save to project-level settings.
    pub(crate) fn save(&self) -> Result<()> {
        let path = Self::get_settings_path();

        let data = toml::to_string_pretty(&self).map_err(|e| {
            error!(dx_src = ?TraceSrc::Dev, ?self, "failed to parse config into toml");
            anyhow::anyhow!("failed to parse config into toml: {e}")
        })?;

        // Create the directory structure if it doesn't exist.
        let parent_path = path.parent().unwrap();
        if let Err(e) = fs::create_dir_all(parent_path) {
            error!(
                dx_src = ?TraceSrc::Dev,
                ?data,
                ?path,
                "failed to create directories for settings file"
            );
            bail!("failed to create directories for settings file: {e}");
        }

        // Write the data.
        let result = fs::write(&path, data.clone());
        if let Err(e) = result {
            error!(?data, ?path, "failed to save global cli settings");

View on GitHub (pinned to 24f6a829df)

Solutions

1. The settings file is not valid TOML. Fix the syntax error in the CLI settings file.

When it happens

Trigger: Thrown at packages/cli/src/settings.rs:80 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of DioxusLabs/dioxus@24f6a829df (2026-08-23). Data as JSON: /api/errors/4547ec2a9392bf23. Report an issue: GitHub.