error2

	JavaScript evaluation error on:
(function executeRule(current, previous /*null when async*/) {
var view_name = "";
if (gs.getSession().isInteractive()) {
var map = gs.action.getGlideURI().getMap();
if (map.get('sysparm_view') != null) {
view_name = map.get('sysparm_view').toString();
if (view_name == 'welcome_hub_flow'){
var condition = current.addQuery('type', '=', 'flow');
current.appendOrQuery(condition, 'type', '=', '');
}
else if (view_name == 'welcome_hub_subflow')
current.addQuery('type', 'subflow');
}
}
})(current, previous);
Root cause of JavaScriptException: java.lang.NullPointerException
: java.lang.NullPointerException: