Laravel 8, Model factory class not found

Question

so when using the new model factories class introduced in laravel 8.x, ive this weird issue saying that laravel cannot find the factory that corresponds to the model. i get

Answer 1

Today I have got below issue after upgrading my project from Laravel 7 to Laravel 8 and updating it online on server.

Trait 'Illuminate\Database\Eloquent\Factories\HasFactory' not found

Even I have updated composer.json with autoload directive given in answer by @lagbox but it did not resolved the issue for me.

Finally I have updated complete vendors folder online that have resolved my issue.

Hope it helps someone in future!