In Laravel, instead of the error template, SW.js is practiced

I used to create errors templates

php artisan vendor: public --tag = Laravel-Terorors

But instead of calling the page 404, for some reason, SW.js with a disorder "Page Not Found!" Teams

php artisan Cache: Clear
php artisan Config: Clear
php artisan Optimize: Clear
php artisan Route: Cache

did not work How to fix the conclusion of error pages?