Laravel 5.4 : The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths

Question

It is Laravel 5.4 setup of my web app. one thing is happening repeatedly on page load. and because of that, I am not able to get data on my page.

Runtime e

Answer 1

Make sure to set APP_Key in .env file and then run following command in the terminal of your application root.

php artisan key:generate

Answer 2

I think you should try this

run this command

php artisan key:generate

and the clear config cache using

php artisan config:cache

Answer 3

i was getting the same error
run this command
php artisan key:generate
and then this command
php artisan config:clear

Answer 4

Make sure your app config has key and cipher set. Also make sure your .env file does not have an empty APP_KEY entry. Finally run:

php artisan key:generate

Answer 5

i was getting the same error.

run this command.

php artisan key:generate

updated the app key in .env

work for me

you can take help from link