Fatal error: Uncaught Error: Call to a member function get() on null in /home/poolarch/www/poolarch.ch/core/components/customsort/model/customsort/customsort.class.php:106 Stack trace: #0 /home/poolarch/www/poolarch.ch/core/components/customsort/model/customsort/customsort.class.php(112): Customsort->getResourceIdAtPosition('p_pf::filter:Au...', -1) #1 /home/poolarch/www/poolarch.ch/core/components/customsort/model/customsort/customsort.class.php(124): Customsort->getResourceAtPosition('p_pf::filter:Au...', -1) #2 /home/poolarch/www/poolarch.ch/core/cache/includes/elements/modsnippet/51.include.cache.php(34): Customsort->getPreviousResource('p_pf::filter:Au...', 0) #3 /home/poolarch/www/poolarch.ch/core/model/modx/modscript.class.php(76): include('/home/poolarch/...') #4 /home/poolarch/www/poolarch.ch/core/model/modx/modparser.class.php(537): modScript->process(NULL) #5 /home/poolarch/www/poolarch.ch/core/model/modx/modparser.class.php(251): modParser->processTag(Array, true) #6 /home/poolarch/www/poolarch.ch/core/model/m in /home/poolarch/www/poolarch.ch/core/components/customsort/model/customsort/customsort.class.php on line 106