Change error theme

[vincenzondb]

Hello, I created and uploaded a new theme in magento2 and so far no problem, then I went administrative side and I changed the compile settings by selecting Client-side compilation as specified here:

https://www.creare.co.uk/blog/magento/theming-in-magento-2-part-2

but from this moment on, I see this error:

There has been an error processing your request

Notice: Array to string conversion in /storage/www/magentotest.it/vendor/magento/framework/View/Page/Config/Renderer.php on line 317

Error log record number: 166041246115

how do I fix?

Thanks

[Dmitry_Fedyuk]

What is the code at the line specified in the error message?

[vincenzondb]

The following piece of code:

protected function getAssetTemplate($contentType, $attributes)
    {
        switch ($contentType) {
            case 'js':
                $groupTemplate = '<script ' . $attributes . ' src="%s"></script>' . "\n"; -> This is the fault line
                break;

            case 'css':
            default:
                $groupTemplate = '<link ' . $attributes . ' href="%s" />' . "\n";   
                break;
        }

        return $groupTemplate;
    }

Thanks