Unable to prerender all routes!

    plugins: [
        new PrerenderSPAPlugin({
            staticDir: __dirname, // The path to the folder where index.html is.
            outputDir: path.join(__dirname, 'prerendered'),
            indexPath: path.join(__dirname, 'dist', 'index.html'),
            routes: ['/'],
            renderer: new Renderer({
                injectProperty: "__PRERENDER_INJECTED",
                inject: {
                    prerendered: false,
                },
                renderAfterElementExists: "[ready]",
                headless: true,
                maxConcurrentRoutes: 1,
                ignoreHTTPSErrors: false,
                renderAfterTime: 0,
            }),

        })
    ]