Failed to open stream: missing ../vendor/autoload.php

[digitalprobr]

Got this message when install:

Warning: require(/home/site/public/../vendor/autoload.php): Failed to open stream: No such file or directory in /home/site/public/index.php on line 13

Fatal error: Uncaught Error: Failed opening required '/home/site/public/../vendor/autoload.php' (include_path='.:/opt/alt/php83/usr/share/pear:/opt/alt/php83/usr/share/php:/usr/share/pear:/usr/share/php') in /home/site/public/index.php:13 Stack trace: #0 {main} thrown in /home/site/public/index.php on line 13

Where I can find this files missing? Thanks!

[scriptoshi]

Run composer update