[opencms-dev] NPE in CmsWebdavServlet 8.0.1

[Jose San Leandro]

Hi,

OpenCMS 8.0.1 is complaining with the following stack trace:

java.lang.NullPointerException
         at
org.opencms.webdav.CmsWebdavServlet.generateLockDiscovery(CmsWebdavServlet.java:3022)
         at
org.opencms.webdav.CmsWebdavServlet.parseProperties(CmsWebdavServlet.java:3421)
         at
org.opencms.webdav.CmsWebdavServlet.doPropfind(CmsWebdavServlet.java:1909)
         at
org.opencms.webdav.CmsWebdavServlet.service(CmsWebdavServlet.java:2868)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

Checking the source code (which I assume corresponds to 
https://github.com/alkacon/opencms-core/blob/e9937a9b7c16206d72289114a056493734b72bc3/src/org/opencms/webdav/CmsWebdavServlet.java):

    private boolean generateLockDiscovery(String path, Element elem, 
HttpServletRequest req) {

->        CmsRepositoryLockInfo lock = m_session.getLock(path);

         if (lock != null) {

             Element lockElem = addElement(elem, TAG_LOCKDISCOVERY);
             addLockElement(lock, lockElem, generateLockToken(req, lock));

             return true;
         }

         return false;
     }

So it seems m_session is null. Any ideas why this could be happening?