Warning: count(): Parameter must be an array or an object that implements Countable in system/modules/imo/templates/mod_reference_detail.html5 on line 15

#0 system/modules/imo/templates/mod_reference_detail.html5(15): __error()
#1 system/modules/core/library/Contao/BaseTemplate.php(88): include('/var/www/vhosts...')
#2 system/modules/core/library/Contao/Template.php(277): Contao\BaseTemplate->parse()
#3 system/modules/core/classes/FrontendTemplate.php(46): Contao\Template->parse()
#4 system/modules/core/modules/Module.php(311): Contao\FrontendTemplate->parse()
#5 system/modules/imo/ModuleReferenceDetail.php(23): Contao\Module->generate()
#6 system/modules/core/elements/ContentModule.php(59): ModuleReferenceDetail->generate()
#7 system/modules/core/library/Contao/Controller.php(484): Contao\ContentModule->generate()
#8 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement()
#9 system/modules/core/modules/Module.php(287): Contao\ModuleArticle->compile()
#10 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate()
#11 system/modules/core/library/Contao/Controller.php(417): Contao\ModuleArticle->generate()
#12 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle()
#13 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule()
#14 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate()
#15 index.php(20): Contao\FrontendIndex->run()
#16 {main}

Warning: count(): Parameter must be an array or an object that implements Countable in system/modules/imo/templates/mod_reference_detail.html5 on line 19

#0 system/modules/imo/templates/mod_reference_detail.html5(19): __error()
#1 system/modules/core/library/Contao/BaseTemplate.php(88): include('/var/www/vhosts...')
#2 system/modules/core/library/Contao/Template.php(277): Contao\BaseTemplate->parse()
#3 system/modules/core/classes/FrontendTemplate.php(46): Contao\Template->parse()
#4 system/modules/core/modules/Module.php(311): Contao\FrontendTemplate->parse()
#5 system/modules/imo/ModuleReferenceDetail.php(23): Contao\Module->generate()
#6 system/modules/core/elements/ContentModule.php(59): ModuleReferenceDetail->generate()
#7 system/modules/core/library/Contao/Controller.php(484): Contao\ContentModule->generate()
#8 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement()
#9 system/modules/core/modules/Module.php(287): Contao\ModuleArticle->compile()
#10 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate()
#11 system/modules/core/library/Contao/Controller.php(417): Contao\ModuleArticle->generate()
#12 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle()
#13 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule()
#14 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate()
#15 index.php(20): Contao\FrontendIndex->run()
#16 {main}

Fatal error: Uncaught exception Error with message Call to a member function next() on null thrown in system/modules/imo/templates/mod_reference_detail.html5 on line 28

#0 system/modules/core/library/Contao/BaseTemplate.php(88): include()
#1 system/modules/core/library/Contao/Template.php(277): Contao\BaseTemplate->parse()
#2 system/modules/core/classes/FrontendTemplate.php(46): Contao\Template->parse()
#3 system/modules/core/modules/Module.php(311): Contao\FrontendTemplate->parse()
#4 system/modules/imo/ModuleReferenceDetail.php(23): Contao\Module->generate()
#5 system/modules/core/elements/ContentModule.php(59): ModuleReferenceDetail->generate()
#6 system/modules/core/library/Contao/Controller.php(484): Contao\ContentModule->generate()
#7 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement()
#8 system/modules/core/modules/Module.php(287): Contao\ModuleArticle->compile()
#9 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate()
#10 system/modules/core/library/Contao/Controller.php(417): Contao\ModuleArticle->generate()
#11 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle()
#12 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule()
#13 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate()
#14 index.php(20): Contao\FrontendIndex->run()
#15 {main}