Your serialized closure might have been modified or it`s unsafe to be unserialized.

The solution for this is noted below

Your serialized closure might have been modified or it`s unsafe to be unserialized.

Solution

php artisan cache:clear
php artisan config:clear
php artisan key:generate

If the above doesnt work then look for a backup .env file and use the same APP_KEY to resolve it.

Try other methods by searching on the site. That is if this doesn’t work