I ran the updater from the Admin (local install.) After a few minutes, the update failed.

Now when I try to load the site:

Warning: require(C:\Users\rickn\Documents\Craft\Projects\Untye/vendor/craftcms/cms/bootstrap/web.php): failed to open stream: No such file or directory in C:\Users\rickn\Documents\Craft\Projects\Untye\wwwroot\index.php on line 20

Fatal error: require(): Failed opening required 'C:\Users\rickn\Documents\Craft\Projects\Untye/vendor/craftcms/cms/bootstrap/web.php' (include_path='.;C:\php\pear') in C:\Users\rickn\Documents\Craft\Projects\Untye\wwwroot\index.php on line 20

There is no "vendor/craftcms/cms" folder

Is there a way to manually update an existing install? I don't see that option in v3 update instructions.

  • you can check the file permissions once and update using composer again.
    – inrsaurabh
    Apr 11, 2019 at 13:34

1 Answer 1


The easiest way is to make sure you have Composer installed.

Then you can go to your project's root and run composer update to pull in a fresh set of dependencies.

  • Thank you! Had to downgrade Twig after running the updates to "2.6.2", but that got me up and going.
    – Rick
    May 19, 2019 at 1:18

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