السلام عليكم :
انا طالية جديدة مستوى أول عندي مشكلة في الدخول ع نظام البلاك بورد من اول كان كل شيء تمام آلآ اني اليوم بغيت افتح ع المحاضرات مو راضي يفتح يجيني هالخرابيط مدري ويش السالفة الله يعافيكم الي عنده حل لمشكلتي لا يبخل علي.
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception blackboard.base.NestedRuntimeException: javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.reflect.UndeclaredThrowableException blackboard.webapps.login.servlet.WebDAVResponseFil ter.doFilter(WebDAVResponseFilter.java:81) sun.reflect.GeneratedMethodAccessor516.invoke(Unkn own Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.apache.catalina.security.SecurityUtil$1.run(Se curityUtil.java:269) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAsPrivileged(Subject .java:517) org.apache.catalina.security.SecurityUtil.execute( SecurityUtil.java:301) org.apache.catalina.security.SecurityUtil.doAsPriv ilege(SecurityUtil.java:243) java.security.AccessController.doPrivileged(Native Method) blackboard.platform.servlet.B2ContextFilter.doFilt er(B2ContextFilter.java:101) sun.reflect.GeneratedMethodAccessor313.invoke(Unkn own Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.apache.catalina.security.SecurityUtil$1.run(Se curityUtil.java:269) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAsPrivileged(Subject .java:517) org.apache.catalina.security.SecurityUtil.execute( SecurityUtil.java:301) org.apache.catalina.security.SecurityUtil.doAsPriv ilege(SecurityUtil.java:243) java.security.AccessController.doPrivileged(Native Method) blackboard.platform.servlet.ContentTypeFilter.doFi lter(ContentTypeFilter.java:56) sun.reflect.GeneratedMethodAccessor312.invoke(Unkn own Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.apache.catalina.security.SecurityUtil$1.run(Se curityUtil.java:269) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAsPrivileged(Subject .java:517) org.apache.catalina.security.SecurityUtil.execute( SecurityUtil.java:301) org.apache.catalina.security.SecurityUtil.doAsPriv ilege(SecurityUtil.java:243) java.security.AccessController.doPrivileged(Native Method) blackboard.platform.servlet.RequestSessionFilter.d oFilter(RequestSessionFilter.java:103) sun.reflect.GeneratedMethodAccessor311.invoke(Unkn own Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.apache.catalina.security.SecurityUtil$1.run(Se curityUtil.java:269) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAsPrivileged(Subject .java:517) org.apache.catalina.security.SecurityUtil.execute( SecurityUtil.java:301) org.apache.catalina.security.SecurityUtil.doAsPriv ilege(SecurityUtil.java:243) java.security.AccessController.doPrivileged(Native Method) blackboard.platform.servlet.XssServletFilter.doFil ter(XssServletFilter.java:132) sun.reflect.GeneratedMethodAccessor310.invoke(Unkn own Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.apache.catalina.security.SecurityUtil$1.run(Se curityUtil.java:269) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAsPrivileged(Subject .java:517) org.apache.catalina.security.