whereBetweenDates macro scope for Laravel 8x.

AppServiceProvider.php

<?php

public function boot()
{
    // Extend the Query Builder
    \lluminate\Database\Query\Builder::macro('whereBetweenDates', function($firstColumn, $secondColumn, $firstDate, $secondDate, $firstComparison = '>=', $secondComparison = '<=') {
        return $this
            ->whereDate($firstColumn, $firstComparison, $firstDate)
            ->whereDate($secondColumn, $secondComparison, $secondDate);
    });

    // Extend the Eloquent Builder
    \Illuminate\Database\Eloquent\Builder::macro('whereBetweenDates', function ($firstColumn, $secondColumn, $firstDate, $secondDate, $firstComparison = '>=', $secondComparison = '<=') {
        return $this->getQuery()->whereBetweenDates($firstColumn, $secondColumn, $firstDate, $secondDate, $firstComparison, $secondComparison);
    });
}