[opencms-dev] error occured to open login page

[subhash.chand]

Hi List,
 
 
    I have installed opencms 6.0.2 and it is working fine. But on shutdown
 Tomcat and again reopen the tomcat and Now It is not opening login page.
following error occurs in
 browser:
 

type Exception report

message 

description The server encountered an internal error () that prevented it
from fulfilling this request.

exception 

org.opencms.main.CmsInitException: Critical error during OpenCms
initialization: Unable to initialize the user driver. 
        org.opencms.main.OpenCmsCore.getInstance(OpenCmsCore.java:265)
        org.opencms.main.OpenCmsServlet.doGet(OpenCmsServlet.java:127)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
 
 
 
 Any help would be appreciated. Thanks in advance.
 
 
 
 Regards
 
 Subhash 
 
 
 
 
 
 
 
 
 
 
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