Invocation of method 'findOptionalDateQuiet' in class com.simplefeed.common.data.DataTree threw exception java.lang.IllegalStateException: Unexpected exception. at org.apache.velocity[line 29, column 81]INPUT:#if (!$itemExisted or ($itemExisted and $itemExisted.getData().containsKeyWithPrefix('sf_slideshow')==false) ) #set($ititle = '') #set($cont = $item.getData().findOptionalStringQuiet('content','')) #set($h2s = $html.select($cont,'h2.sl-gallery-title',false,true)) #foreach ($h2 in $h2s) #set($h2text = $h2.text().trim()) #if ("$!{h2text}"!='') #set($ititle = $h2text) #end #end #if ("$!{ititle}"!='') #set($iitems = $producer.findContentItemsByDataKey(['yahoos_motorcycle'],'title',$ititle,1) ) #foreach ($ii in $iitems) #set($iilink = $ii.getLink()) #set($x = $item.getData().addValue('sf_slideshow_link', $iilink)) #set($x = $item.getData().setOptionalBooleanQuiet('updateForce', true)) #set($dctermsMod = $item.getData().findOptionalDateQuiet("dcterms:modified", null)) #if ($dctermsMod) #set($newMod = $date.addMinutes($dctermsMod, 1)) #else #set($newMod = $date.now()) #end #set($x = $item.getData().putValue("dcterms:modified", $newMod)) #break #end #end #else #set($x = $item.getData().addValue('sf_slideshow_link', $itemExisted.getData().findOptionalStringQuiet('sf_slideshow_link',''))) #set($x = $item.getData().addValue('dcterms:modified', $itemExisted.getData().findOptionalDateQuiet('dcterms:modified',null))) #end