DWE

 This error occurred when passport authentication were installed and while checking the /user route. This error might cause for the new changes in authentication file, config file & changes in route. So, what worked for me is this: php artisan config:clear php artisan config:cache  php artisan cache:clear  

  This error occurs when i try to install vue in laravel 8. So the error says:    Warning from https://repo.packagist.org: You are using an outdated version of  Composer. Composer 2 is now available and you should upgrade. See  https://getcomposer.org/2 and when i try to install ui obviously it says: Command "ui" is not defined.  because it doesn't find the ui as it can't install the ui through composer. So, To solve that, Run: composer self-update then, composer update then,  composer require laravel/ui then, php artisan ui vue then,  npm install npm run dev. For, me this s...

 When you install maat and do some changes and immediately try to download export file / something else this might occur. Because of cache issue this often occurs. Now to solved this what worked for me is:  Run:    php artisan config:cache        php artisan cache:clear