_formatDebug(system) {
        const {version} = system.getInstance();
        const ghostVersion = version ? `    Ghost Version: ${version}\n` : '';

        return 'Debug Information:\n' +
            `    OS: ${system.operatingSystem.distro}, v${system.operatingSystem.release}\n` +
            `    Node Version: ${process.version}\n` +
            ghostVersion +
            `    Ghost-CLI Version: ${system.cliVersion}\n` +
            `    Environment: ${system.environment}\n` +
            `    Command: 'ghost ${process.argv.slice(2).join(' ')}'`;
    }
Helper method to format the debug information whenever an error occurs

@param {System} system System instance
@return string Formated debug info

@method _formatString
@private