bootstrap/../vendor/autoload.php. Failed to open stream: No such file or directory. The “vendor” folder does not exist.
Which OS you are using ? For Windows : Go to Command Prompt
set path to www/{ur project}
For me : www/laravel5
Then type this command : composer install
It will automatically install all dependency in vendor/
————————/OR/—————————-
Run composer with –no-scripts
composer update --no-scripts
This shall fix the issue. I tried this on Mac and Linux.