def cols = row.select("td")
    def link = cols.get(4).select('ac|link')
    log.debug(link.size())
    for( int w = 0; w < link.size(); w++){
        def user = link[e].select('ri|user').attr('ri:userkey')
        e = e+1
    	def q = userAccessor.getUserByKey(new UserKey(user))
        //subAssignee.add(q.name)
        log.debug(q.name)
    }

java.lang.NullPointerException: Cannot invoke method select() on null object
	at org.jsoup.nodes.Element$select.call(Unknown Source)
	at Script77.run(Script77.groovy:54)