Which are the files we need to upload in the live server after composer update
Scenario1:
1.Install one package in local
2.upload into the live server
3.remove the package from local do composer update
4.upload again to live server
This case if your page is showing as blank page please do the following steps
Upload the below folder will solve the issue
1. All the view and controller files
2.composer.json & composer.lock files.
3. Vendor folder changes,vendor/autoload.php, vendor/composer
4.app/config/app.php