Manage Transactions with Eloquent Mutators

Sorry about this but I am getting a error again. "message": "The transaction date field must be a valid date.", "errors": { "transaction_date": [ "The transaction date field must be a valid date." ] } status: 422 Unprocessable Content transaction_date 02-23-2023

    use Carbon\Carbon;
 
    class Transaction extends Model
 
     public function setTransactionDateAttribute($value)
{
    $this->attributes['transaction_date'] = Carbon::createFromFormat('m/d/Y', $value)
        ->format('Y-m-d');
}
 
    If I comment this out it work but the date does not change
 
    The update methad will not work either get the same error message.

please give us the source code of this course or the github link