Hello everyone,
I am trying to create a CSV file and then attach it to an email and send the email but I am receiving the following error: PLS-00201: identifier 'APEX_DATA_EXPORT.T_EXPORT' must be declared

Below is the code I am attempting to run:

declare
    l_context   apex_exec.t_context;
    l_export    apex_data_export.t_export;
    l_mail_id   NUMBER;
    l_workspace_id NUMBER;
    name        varchar2(225);
begin
    select LNAME || '_' || FNAME || '_' || MNAME into name
    from IN_PROCESSING 
    where :P23_PERS_ID = PERS_ID;
    
    l_workspace_id := apex_util.find_security_group_id (p_workspace => 'OPERATIONS MANAGEMENT');
    apex_util.set_security_group_id (p_security_group_id => l_workspace_id);
    
    l_context := apex_exec.open_query_context (
            p_location    => apex_exec.c_location_local_db,
            p_sql_query   => 'select i.EMPLOYEEID, 
                                i.LNAME || '', '' || i.FNAME || '' '' || i.MNAME as NAME, 
                                ASSIGNED_ORG, 
                                PHONE_NUM, 
                                (select p.LNAME || '', '' || p.FNAME || '' '' || p.MNAME from PERSONS p where i.SUPV = p.DISPLAY_NAME) as SUPERVISOR_NAME, 
                                i.OFFICE_SYM, 
                                i.POSITION_TYPE, 
                                i.DUTY_TITLE || '' '' || i.RANK_GRADE as DUTY_TITLE_RANK_GRADE, 
                                CYBERAWARE_DATE, 
                                decode(i.GAIN_TYPE, ''Foreign National'', ''Yes'',NULL) as FOREIGN_NATIONAL, 
                                COMPANY_NAME, 
                                CONTR_NO, 
                                CONTR_EXP_DATE 
                                from IN_PROCESSING i 
                                where PERS_ID = '||:P23_PERS_ID||';',
            p_file_name    =>   ''||name||'_test.csv');
    l_export := apex_data_export.export (p_context => l_context, p_format => apex_data_export.c_format_csv);

    apex_exec.close (l_context);

    l_mail_id :=
        APEX_MAIL.SEND (p_to          => 'me@mail',
                        p_from        => 'csv_test@us.af.mil',
                        p_body        => 'words',
                        p_body_html   => '<h2>Report is attached</h2>',
                        p_subj        => 'Example Report');

    APEX_MAIL.ADD_ATTACHMENT (p_mail_id      => l_mail_id,
                              p_attachment   => l_export.content_blob,
                              p_filename     => ''||name||'_test.csv',
                              p_mime_type    => 'text/csv');

    apex_mail.push_queue;
    
end;

And below is the error received:
ORA-06550: line 3, column 17:
PLS-00201: identifier 'APEX_DATA_EXPORT.T_EXPORT' must be declared
ORA-06550: line 0, column 0:
PL/SQL: Compilation unit analysis terminated
ORA-06512: at "SYS.DBMS_SQL", line 1721


1. declare
2. l_context apex_exec.t_context;
3. l_export apex_data_export.t_export;
4. l_mail_id NUMBER;
5. l_workspace_id NUMBER;


Any assistance would be appreciated.
Thank you,
Derek