ORA-00932: inconsistent datatypes: expected DATE got NUMBER

Here is sql-query:

select t1.id, t1.rep_id1, t1.rep_id2, t1.proc_name, t1.proc_result, t1.descr from cnfl_szd_rep_add t1, (select min(id) rep_id1, max(id) rep_id2 from cnfl_implement_rep where trunc(report_date)=trunc(:p_date)) t2 where t1.rep_id1=t2.rep_id1 and t1.rep_id2=t2.rep_id2

Here is structure of the table cnfl_implement_rep:

create table CNFL_IMPLEMENT_REP ( id NUMBER not null, insert_date DATE, report_date DATE, staff_id NUMBER, app_ver NUMBER, staff_begin DATE, staff_end DATE, day_night VARCHAR2(10), tsa_info CLOB, rep_gbr CLOB, is_deleted INTEGER default 0);

Here is structure of the table cnfl_szd_rep_add:

create table CNFL_SZD_REP_ADD ( id NUMBER not null, rep_id1 NUMBER, rep_id2 NUMBER, proc_name VARCHAR2(4000), proc_result VARCHAR2(4000), descr VARCHAR2(4000));

I have created datasource definition, have chosen that it is based on Query, have created bind variable p_date with domain DefaultDate and I get error message 'ORA-00932: inconsistent datatypes: expected DATE got NUMBER' when I press OK button to save the datasource definition.

Why do I get such error message?