Error: java.lang.IllegalArgumentException: The path of an ForwardConfig cannot be null

Description:

While using a Form with input fields, we get this error
<action path="/Login"
          name="userForm"
          type="com.dct.struts.learning.actions.UserAction">
          <forward name="success" path="/pages/login.jsp"></forward>
</action>

Solution:

This means after doing a validation, we need to specify where to be forwarded, incase of a failure. Hence the parameters "validate" and "input"(place from where it comes & to where it needs be forwarded) should be specified.
<action path="/Login"
           name="userForm"
           type="com.dct.struts.learning.actions.UserAction"
           validate="true"
           input="/login.jsp">
           <forward name="success" path="/pages/login.jsp"></forward>
</action>