Fatal error: Uncaught TypeError: date_format(): Argument #1 ($object) must be of type DateTimeInterface, false given in /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/modules/LISE/lib/class.lise_datetime_utils.php:121
Stack trace:
#0 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/modules/LISE/lib/class.lise_datetime_utils.php(121): date_format(false, 'Z')
#1 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/modules/LISE/lib/fielddefs/SelectDateTime/liseeh.SelectDateTime.php(179): lise_datetime_utils::date_to_unix_ts('1483138800')
#2 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/modules/LISE/lib/class.LISEItemOperations.php(392): liseeh_SelectDateTime->OnItemLoad(Object(LISEZmluvy2016))
#3 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/modules/LISE/framework/action.default.php(284): LISEItemOperations::Load(Object(LISEZmluvy2016), Object(LISEItem), Array, false)
#4 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/modules/LISE/lib/class.LISEInstance.php(532): include('/data/5/8/58ead...')
#5 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/classes/class.CMSModule.php(1483): LISEInstance->DoAction('default', 'm1244b', Array, '248')
#6 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/functions/module.functions.php(106): CMSModule->DoActionBase('default', 'm1244b', Array, '248', Object(CMS_Smarty_Template))
#7 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/classes/class.CMSModule.php(253): cms_module_plugin(Array, Object(CMS_Smarty_Template))
#8 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/tmp/templates_c/248content_en^62e936251e4799749e89fa9828a0ee7332eb5816_0.content.content_en.php(24): CMSModule::function_plugin(Array, Object(CMS_Smarty_Template))
#9 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_template_resource_base.php(123): content_66dbc9526343a4_58689797(Object(CMS_Smarty_Template))
#10 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_template_compiled.php(114): Smarty_Template_Resource_Base->getRenderedTemplateCode(Object(CMS_Smarty_Template))
#11 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_internal_template.php(217): Smarty_Template_Compiled->render(Object(CMS_Smarty_Template))
#12 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_internal_templatebase.php(238): Smarty_Internal_Template->render(false, 0)
#13 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_internal_templatebase.php(116): Smarty_Internal_TemplateBase->_execute(Object(CMS_Smarty_Template), 'p248|content_en', '248content_en', NULL, 0)
#14 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/classes/internal/class.CMS_Smarty_Template.php(20): Smarty_Internal_TemplateBase->fetch('content:content...', 'p248|content_en', '248content_en', NULL)
#15 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/classes/internal/class.CMS_Content_Block.php(316): CMS_Smarty_Template->fetch('content:content...', 'p248|content_en', '248content_en')
#16 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/tmp/templates_c/d833eb56734d1f446bb644beb9f915e73541b0e8_0.tpl_top.106.php(32): CMS_Content_Block::smarty_internal_fetch_contentblock(Array, Object(CMS_Smarty_Template))
#17 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_template_resource_base.php(123): content_66d8a4ef6c6a94_07548208(Object(CMS_Smarty_Template))
#18 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_template_compiled.php(114): Smarty_Template_Resource_Base->getRenderedTemplateCode(Object(CMS_Smarty_Template))
#19 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_internal_template.php(217): Smarty_Template_Compiled->render(Object(CMS_Smarty_Template))
#20 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_internal_templatebase.php(238): Smarty_Internal_Template->render(false, 0)
#21 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/smarty/sysplugins/smarty_internal_templatebase.php(116): Smarty_Internal_TemplateBase->_execute(Object(CMS_Smarty_Template), 'p248', NULL, NULL, 0)
#22 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/lib/classes/internal/class.CMS_Smarty_Template.php(20): Smarty_Internal_TemplateBase->fetch(NULL, 'p248', NULL, NULL)
#23 /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/index.php(151): CMS_Smarty_Template->fetch()
#24 {main}
thrown in /data/5/8/58ead5b2-4a2d-4a24-9a7e-0d681a2abe27/skola-varin.sk/web/modules/LISE/lib/class.lise_datetime_utils.php on line 121