Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /var/www/vhosts/mineraalverzamelen.nl/httpdocs/collectionv9/classes/viewpage.php:488
Stack trace:
#0 /var/www/vhosts/mineraalverzamelen.nl/httpdocs/collectionv9/classes/viewpage.php(504): ViewPage->prepareNextPrevButtons()
#1 /var/www/vhosts/mineraalverzamelen.nl/httpdocs/collectionv9/classes/viewpage.php(215): ViewPage->prepareButtons()
#2 /var/www/vhosts/mineraalverzamelen.nl/httpdocs/collectionv9/Category_view.php(61): ViewPage->process()
#3 {main}
thrown in /var/www/vhosts/mineraalverzamelen.nl/httpdocs/collectionv9/classes/viewpage.php on line 488