Table function with bulk collection throws invalid datatype

I am writing a function and i want to wrap it with table function so i can use with select query.

Here is my type declaration and the some lines of my functions

CREATE OR REPLACE PACKAGE TYPES 
    AS 
        TYPE CURSORTYPE IS REF CURSOR; 

        TYPE vbugsrec
          IS
             RECORD (
                bug_id     bugs.bug_id%TYPE,
                facility   bugs.facility%TYPE
             );

          TYPE vbugstable
          IS
             TABLE OF vbugsrec
                INDEX BY BINARY_INTEGER;

    END;


      /
    CREATE OR REPLACE PACKAGE BODY CustomQueries
    AS
       FUNCTION pendverifylist (myldapid   IN userpass.ldapalias%TYPE,
                                maxrows    IN PLS_INTEGER:= CustomQueries.maxrecords)
          RETURN types.vbugstable
       IS
          datarows    types.vbugstable; 
          var_useralias userpass.ldapalias%TYPE
                := UPPER (pendverifylist.myldapid) ;

        CURSOR pendverify_cur (
             cursor_var_alias         IN            userpass.ldapalias%TYPE,
             cursor_var_mybugstatus   IN            bugs.bug_status%TYPE,
             cursor_var_wild          IN            qa_list.component%TYPE
          )
          IS
             SELECT   buglist.bug_id, buglist.facility
               FROM   bugs buglist,
                      (SELECT   qa.product, qa.component
                         FROM   qa_list qa, userpass UP
                        WHERE   qa.qa_id = UP.userid
                                AND UP.ldapalias = cursor_var_alias) plist
              WHERE       buglist.bug_status = cursor_var_mybugstatus
                      AND buglist.smr_state IN (SELECT   fs.finalstate
                                                  FROM   finalstates fs)
                      AND buglist.facility = plist.product
                      AND (buglist.product LIKE plist.component
                           OR plist.component = cursor_var_wild);

       BEGIN