Exception: net.sf.json.JSONException

Message:
net.sf.json.JSONException:A JSONArray text must start with '[' at character 1 of null

Stack Trace:
at net.sf.json.util.JSONTokener::syntaxError (JSONTokener.java:500)
at net.sf.json.JSONArray::_fromJSONTokener (JSONArray.java:782)
at net.sf.json.JSONArray::_fromString (JSONArray.java:861)
at net.sf.json.JSONArray::fromString (JSONArray.java:223)
at com.dc.tuois.portal.pages.bsm.msgshare.ComfortableShare::headerList (ComfortableShare.java:185)
at com.dc.tuois.portal.pages.base.BasePage::onInitialized (BasePage.java:46)
at kit.web.page.WebPage::render (WebPage.java:55)
at kit.web.app.ApplicationDispatcherImpl::dispatch (ApplicationDispatcherImpl.java:66)
at kit.web.FilterDispatcher::doFilter (FilterDispatcher.java:46)
at weblogic.servlet.internal.FilterChainImpl::doFilter (FilterChainImpl.java:56)
at org.springframework.web.filter.RequestContextFilter::doFilterInternal (RequestContextFilter.java:83)
at org.springframework.web.filter.OncePerRequestFilter::doFilter (OncePerRequestFilter.java:76)
at weblogic.servlet.internal.FilterChainImpl::doFilter (FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction::wrapRun (WebAppServletContext.java:3730)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction::run (WebAppServletContext.java:3696)
at weblogic.security.acl.internal.AuthenticatedSubject::doAs (AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager::runAs (SecurityManager.java:120)
at weblogic.servlet.internal.WebAppServletContext::securedExecute (WebAppServletContext.java:2273)
at weblogic.servlet.internal.WebAppServletContext::execute (WebAppServletContext.java:2179)
at weblogic.servlet.internal.ServletRequestImpl::run (ServletRequestImpl.java:1490)
at weblogic.work.ExecuteThread::execute (ExecuteThread.java:256)
at weblogic.work.ExecuteThread::run (ExecuteThread.java:221)