After updating Laravel composer blank page coming

I added in google mapper require in composer.json and updated it seccesfully. But when try to connect my page. Just seeing blank page. No error or something. just blank page.

this is the log.

Package operations: 1 install, 2 updates, 0 removals - Updating laravel/framework (v5.7.10 => v5.7.11): Downloading (100%)
- Updating spatie/laravel-backup (5.11.1 => 5.11.2): Downloading (100%)
- Installing cornford/googlmapper (v2.33.0): Downloading (100%) Writing lock file Generating optimized autoload files

Illuminate\Foundation\ComposerScripts::postAutoloadDump @php artisan package:discover Discovered Package: beyondcode/laravel-dump-server Discovered Package: cornford/googlmapper Discovered Package: fideloper/proxy Discovered Package: kyslik/column-sortable Discovered Package: laravel/tinker Discovered Package: nesbot/carbon Discovered Package: nunomaduro/collision Discovered Package: spatie/laravel-backup Package manifest generated successfully.

Any idea why is this happining?

via Chebli Mohamed