License old and do not login NetFlow Analyzer

License old and do not login NetFlow Analyzer

Dear Admin,

1. I already have a license for version 9800 but not used when the update version 12.
You can send me license v12???

2. I have a few problems want to help you solve1. I can not login web NetFlow even though the service was normal start. after filling username/ password display out notice

"Exception report message

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

exception

java.io.FileNotFoundException: /opt/ManageEngine/NetFlow/webapps/netflow/index.html (Too many open files)
java.io.FileInputStream.open(Native Method)
java.io.FileInputStream.<init>(Unknown Source)
org.apache.naming.resources.FileDirContext$FileResource.streamContent(FileDirContext.java:927)
org.apache.catalina.servlets.DefaultServlet.copy(DefaultServlet.java:1764)
org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:851)
org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
com.adventnet.iam.security.SecurityFilter.doFilter(SecurityFilter.java:462)
com.adventnet.authentication.filter.AssociateCredential.doFilter(AssociateCredential.java:43)
note The full stack trace of the root cause is available in the Apache Tomcat/@VERSION@ logs."

Looking forward to hear from you!!!

Best regards./
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