I have done manual backup of my site and setup it on local bit getting the below error:

Autoload error:

Vendor autoload is not found. Please run 'composer install' under application root directory.

Can anyone please help me to rectify this error?

  • 1
    try to run composer update and deployment commands.
    – Sumit
    Oct 31, 2019 at 7:31
  • 1
    Have you run composer install and composer update using cli? Oct 31, 2019 at 7:31
  • 1
    Please check your vendor directory if that is empty then run composer install once and then run deployment commands. Oct 31, 2019 at 7:32
  • I'm getting the below error when I run composer update: [ErrorException] copy(/home/monika/.composer/cache/files/zendframework/zend-session/8445ecbb 8ab9213c5b500536ff7d96ee51387b0c.zip): failed to open stream: Permission de nied
    – Siv
    Oct 31, 2019 at 7:35
  • 1
    Try to run sudo composer install Oct 31, 2019 at 9:27

1 Answer 1


Finally, I have solved this issue by running the following commands:

sudo composer install
sudo composer update

After that the deployment commands. So, here I have added sudo with composer install and update. Thanks for all your suggestions that make me resolve this issue.

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