Fatal error: Uncaught Error: Call to a member function getCheckout() on array in /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/components/knpm/model/knpm/checkout/sections/order/knpmorderform.class.php:410
Stack trace:
#0 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/components/knpm/model/knpm/checkout/knpmform.class.php(39): KNPMOrderForm->setFields()
#1 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/vendor/xpdo/xpdo/src/xPDO/xPDO.php(1260): KNPMForm->__construct(Object(MODX\Revolution\modX), Array)
#2 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/components/site/model/site/siteform.class.php(405): xPDO\xPDO->getService('knpmorderform', 'KNPMOrderForm', '/var/hpwsites/u...')
#3 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/components/site/model/site/siteform.class.php(197): SiteForm->setInstallationDateOptions()
#4 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/cache/includes/elements/modx/revolution/modsnippet/186.include.cache.php(23): SiteForm->process('report-relocati...', 25)
#5 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modScript.php(88): include('/var/hpwsites/u...')
#6 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modParser.php(508): MODX\Revolution\modScript->process(NULL)
#7 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/components/pdotools/src/Parsing/Parser.php(276): MODX\Revolution\modParser->processTag(Array, true)
#8 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modParser.php(221): ModxPro\PdoTools\Parsing\Parser->processTag(Array, true)
#9 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/components/pdotools/src/Parsing/Parser.php(73): MODX\Revolution\modParser->processElementTags('', '<!doctype html>...', true, false, '[[', ']]', Array, 9)
#10 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modResource.php(534): ModxPro\PdoTools\Parsing\Parser->processElementTags('', '<!doctype html>...', true, false, '[[', ']]', Array, 10)
#11 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modResource.php(482): MODX\Revolution\modResource->parseContent()
#12 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modResponse.php(72): MODX\Revolution\modResource->prepare()
#13 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modRequest.php(154): MODX\Revolution\modResponse->outputContent(Array)
#14 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modRequest.php(138): MODX\Revolution\modRequest->prepareResponse()
#15 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/src/Revolution/modX.php(1512): MODX\Revolution\modRequest->handleRequest()
#16 /var/hpwsites/u_kabelnoord_actie/website/html/webroot/index.php(308): MODX\Revolution\modX->handleRequest()
#17 {main}
thrown in /var/hpwsites/u_kabelnoord_actie/website/html/webroot/core/components/knpm/model/knpm/checkout/sections/order/knpmorderform.class.php on line 410