I have recently installed magento latest version i.e. Magento 2.3.0 in local wamp machine with php 7.2.4

Installed it using command line interface.

But when i tired to run it show me error like

Exception #0 (Magento\Framework\Exception\ValidatorException): Invalid template file: 'D:/wamp64/www/mage23/vendor/magento/module-theme/view/frontend/templates/page/js/require_js.phtml' in module: '' block's name: 'require.js'
  • Is it working for you? – Rohan Hapani Nov 30 '18 at 8:55
  • no still not working all extenssion are there. – MageLerner Nov 30 '18 at 8:58

Yes, This is the problem with windows. Windows uses "\" as separator, the array "directories" contains entries with "/" as separator, so the check will always fail. So you need to fix this by replacing the separator in core file:


function isPathInDirectories replace below code in isPathInDirectories function

$realPath = str_replace('\\', '/', $this->fileDriver->getRealPath($path));
  • This is a very common issue, Many people are not aware of the fact that Magento does not officially support Windows servers! some hacks and un-official modifications such as this one needs to be done in order to make it work on a Windows machine, If you visit the below link "Magento 2.3.x technology stack requirements" you can see that the only supported OS is "Linux x86-64". devdocs.magento.com/guides/v2.3/install-gde/… – Yacoub Oweis Feb 2 '19 at 8:50
  • for windows system what should be the actual code ? i am trying '\' line in first but this single back-slash is not allowed ... – Flutterer Feb 20 '19 at 8:10

For me, solution worked is by going to the file \vendor\magento\framework\View\Element\Template\File\Validator.php and replacing the below function definition as below:

> protected function isPathInDirectories($path, $directories) {
>     if (!is_array($directories)) {
>         $directories = (array)$directories;
>     }
>     $realPath = $this->fileDriver->getRealPath($path);
>     $realPath = str_replace('\\', '/', $realPath); // extra code added
>     foreach ($directories as $directory) {
>         if (0 === strpos($realPath, $directory)) {
>             return true;
>         }
>     }
>     return false; }

PS: This is windows specific issue.


Magento 2.3 does not support windows. You can find my solution here: enter link description here

  • 1
    it makes no sense for it to not support windows but has such a simple "fix". – R T Dec 18 '18 at 8:40

It's the core issue of not just Magento 2.3.0, but I faced that problem in Magento 2.2.7 as well. In order to make the code work on windows instead of using realpath just use the $path argument passed to the method

Go to path /vendor/magento/framework/View/Element/Template/File/Validator.php and instead of the line

if (0 === strpos($realPath, $directory)) {


if (0 === strpos($path, $directory)) {

Or follow this discussion https://github.com/magento/magento2/issues/19480


In Magento 2.2.9 replace /vendor/magento/framework/View/Element/Template/File/Validator.php isPathInDirectories function code with this code

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

This probably happens when developing under Windows System.

Go to line 140 in file Path /vendor/magento/framework/View/Element/Template/File/Validator.php Replace this code of line

$realPath = $this->fileDriver->getRealPath($path);


$realPath = str_replace('\\', '/', $this->fileDriver->getRealPath($path));

Beware of this line of code

$realPath = str_replace('\', '/', $this->fileDriver->getRealPath($path));

This won't probably work because of the php backslash scape. you have to do double backslash to tell PHP explicitly that it is not dealing with new line here but a backslash.


Please See that,It should be double slash i.e "\\"

$realPath = str_replace('\\\', '/', $this->fileDriver->getRealPath($path));

As mentioned the issue is Windows compatability. But I would recommend to change it a bit differently to work even when migrating systems, e.g. for local development on Windows and later deployment on a Linux server. So that only in case you are operating on Windows you will adjust the path.




function isPathInDirectories()


$realPath = $this->fileDriver->getRealPath($path);


a) PHP >= 7.2:

if (PHP_OS_FAMILY === 'Windows')
  $realPath = str_replace('\\', '/', $this->fileDriver->getRealPath($path));
  $realPath = $this->fileDriver->getRealPath($path);

b) PHP < 7.2:

if (strtolower(substr(PHP_OS, 0, 3)) === 'win')
  $realPath = str_replace('\\', '/', $this->fileDriver->getRealPath($path));
  $realPath = $this->fileDriver->getRealPath($path);

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