Magento 2.3 Admin panel blank issue

After the Installation of Magento from the composer, we cannot access the admin panel. Also, the deploy command doesn't work. (On Windows 10 OS).
Note: Magento 2.3 supports Linux OS. Windows and Mac OS is not supported.

This is a Magento bug. Wrong paths to Windows are generated. The fixed fix is

Magento 2.3.0 - 2.3.3

#/vendor/magento/framework/View/Element/Template/File/Validator.php:140
the string

if (0 === strpos($realPath, $directory)) {
    return true;
}
to replace

$realDirectory = $this->fileDriver->getRealPath($directory);
if (0 === strpos($realPath, $realDirectory)) {
   return true;
}
Magento 2.2.7

/vendor/magento/framework/View/Element/Template/File/Validator.php:113
code

protected function isPathInDirectories($path, $directories)
{
    if (!is_array($directories)) {
        $directories = (array)$directories;
    }
    foreach ($directories as $directory) {
        if (0 === strpos($this->fileDriver->getRealPath($path), $directory)) {
            return true;
        }
    }
    return false;
}
to replace

protected function isPathInDirectories($path, $directories)
    {
        $realPath = str_replace('\\', '/', $this->fileDriver->getRealPath($path));
        if (!is_array($directories)) {
            $directories = (array)$directories;
        }
        foreach ($directories as $directory) {
            if (0 === strpos($realPath, $directory)) {
                return true;
            }
        }
        return false;
    }
If You can't find out the (/vendor/magento/framework/) folder in magento 2.2.7 - 2.3.3 . Then You can check it here:

#lib\internal\Magento\Framework\View\Element\Template\File\Validator.php