#30 could not attach file with description

[Anonymous]

Dears
Error occurs in attaching file with file description

net.wastl.webmail.exceptions.DocumentNotFoundExceptio
n: Could not attach file. (Reason: null)
at FileAttacher.handleURL
(FileAttacher.java:137)
at
net.wastl.webmail.server.ToplevelURLHandler.handleURL
(ToplevelURLHandler.java:142)
at
net.wastl.webmail.server.WebMailServlet.service
(WebMailServlet.java:287)
at
org.apache.catalina.core.ApplicationFilterChain.internalDo
Filter(ApplicationFilterChain.java:247)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:260)
at
org.apache.catalina.core.StandardPipeline$StandardPipeli
neValveContext.invokeNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:480)