If you want to access your application, you can change the default format in the Illuminate/Support/MessageBag.php file line 22 after this php artisan optimize run command
protected $format = '<li>:message</li>';
Note If you are updating / installing the composer, you need to change it again.
And if you do not want to do this, you can use seFormat () to set the format of the error message, this must be done in all your views. For example - in your opinion
$errors->setFormat('<li>:message</li>');
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