Missing .gitignore files

Problem: missing .gitignore files

If you downloaded a compressed archive, there might have been missing .gitignore files that prevent the upgrade from completing properly. To apply our update, patch magento/magento-composer-installer then run composer update from your Magento installation directory.

The following figure shows an example of this issue when using the Setup Wizard.

Solution

To solve this issue:

1. Log in to your Magento server as the Magento file system owner.
2. Change to your Magento installation directory.

3. Run the following commands in the order shown:

   composer update magento/magento-composer-installer
   composer update
   

4. Try your upgrade again.