nginx - Laravel - Error page is blank after update from 5.3 to 5.4 -

i have updated laravel 5.3 5.4. error pages white , not display error after update. using local server. specifications:

os: ubuntu 16.04 nginx/1.9.15 php 5.6.11 

i read question (laravel blank white screen) , have tried solutions:

# group writable (group, user writable) $ sudo chmod -r gu+w storage  # world-writable (group, user, other writable) $ sudo chmod -r guo+w storage 

and other solutions have been proposed. problem persists!

also, application debuggin in .env , config/app.php true.

who can help?

after update laravel may clear cache , compiled page. try this:

php artisan view:clear php artisan cache:clear php artisan config:clear php artisan route:clear php artisan clear-compiled php artisan optimize