Hello, try this simple improving
In
administrator/components/com_booking/helpers/booking.php
Is code looks like
/**
* Get week calendar for selected subject.
*
* @param TableSubject $subject
* @param BookingCalendarSetting $setting
* @return stdClass
*/
function getWeekCalendar(&$subject, &$setting, $count = 'week')
{
$mainframe = JFactory::getApplication();
/* @var $mainframe JApplication */
$current = JFactory::getDate();
/* @var $current JDate */
$config = &AFactory::getConfig();
/* @var $config BookingConfig */
Replace with
/**
* Get week calendar for selected subject.
*
* @param TableSubject $subject
* @param BookingCalendarSetting $setting
* @return stdClass
*/
function getWeekCalendar(&$subject, &$setting, $count = 'week')
{
$mainframe = JFactory::getApplication();
/* @var $mainframe JApplication */
$current = JFactory::getDate('tomorrow');
/* @var $current JDate */
$config = &AFactory::getConfig();
/* @var $config BookingConfig */
I'm not sure if it will works with all PHP versions.