Exception:call_user_func_array(): Argument #1 ($callback) must be a valid callback, no array or string given
#0 /home/gts/domains/dealer.gts-scooters.com/public_html/app/src/classes/class.option.php(23): apply_filters()
#1 /home/gts/domains/dealer.gts-scooters.com/public_html/app/src/functions.php(11): option->get()
#2 /home/gts/domains/dealer.gts-scooters.com/public_html/app/src/functions.php(1779): get_option()
#3 /home/gts/domains/dealer.gts-scooters.com/public_html/app/src/functions.php(1843): siteurl()
#4 /home/gts/domains/dealer.gts-scooters.com/public_html/app/src/filters.default.php(138): themeurl()
#5 /home/gts/domains/dealer.gts-scooters.com/public_html/app/src/initialize.php(219): include('...')
#6 /home/gts/domains/dealer.gts-scooters.com/public_html/app/src/Imod.php(191): require('...')
#7 /home/gts/domains/dealer.gts-scooters.com/public_html/app/load.php(38): Imod->run()
#8 /home/gts/domains/dealer.gts-scooters.com/public_html/index.php(3): require('...')
#9 {main}