PLS-00103: Encountered the symbol "CREATE" for package - sql

Question

I have to execute a SQL file (I do not have much idea of SQL, I just have to execute it) but there is an error I do not understand:
Errors: check compiler log
Errors for PACKAGE USER1.TST_MAI_FILTER:
LINE/COL ERROR
29/1 PLS-00103: Encountered the symbol "CREATE"
This is the PACKAGE USER1.TST_MAI_FILTER:
CREATE OR REPLACE PACKAGE TST_MAI_FILTER IS
FUNCTION TRADE_TYPE
RETURN NUMBER;
FUNCTION ORDER_TYPE
RETURN NUMBER;
FUNCTION MRKT_EVT_TYPE
RETURN NUMBER;
FUNCTION DAILY_DATA_TYPE
RETURN NUMBER;
PROCEDURE log_mai_filter(p_run_id NUMBER, p_config_id NUMBER);
PROCEDURE is_valid_filter
(p_mai_class_id IN NUMBER,
p_type_id IN NUMBER,
v_where CLOB);
END TST_MAI_FILTER;
/
I am using Oracle SQL Developer (Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production).
EDIT: This is line 29:
CREATE SEQUENCE S_TRD START WITH 1 INCREMENT BY 1 MINVALUE 1 CACHE 20 NOORDER;
and this is the rest of the package but it does not get until there since the developer stops after this error:
CREATE OR REPLACE PACKAGE BODY TST_MAI_FILTER IS
FUNCTION TRADE_TYPE
RETURN NUMBER
IS
BEGIN
RETURN 1;
END;
FUNCTION ORDER_TYPE
RETURN NUMBER
IS
BEGIN
RETURN 2;
END;
FUNCTION MRKT_EVT_TYPE
RETURN NUMBER
IS
BEGIN
RETURN 3;
END;
FUNCTION DAILY_DATA_TYPE
RETURN NUMBER
IS
BEGIN
RETURN 4;
END;
PROCEDURE log_mai_filter(p_run_id NUMBER, p_config_id NUMBER)
IS
v_mesg VARCHAR2(4000 BYTE) := NULL;
BEGIN
INSERT INTO mai_filter_log (run_id, mai_query_id, sql_query, config_id, type_id, mai_class_id)
SELECT p_run_id, mai_query_id, sql_query, config_id, type_id, mai_class_id
FROM mai_filter
WHERE config_id = p_config_id;
LOG_INFO(p_run_id, 'I', 'RUN_LOG: Log mai_filter: ' || SQL%ROWCOUNT );
EXCEPTION
WHEN OTHERS THEN
v_mesg := 'An error has occured when executing log_mai_filter - ' || SQLCODE || ' -ERROR- ' || SQLERRM;
raise_application_error(-20085, v_mesg);
LOG_INFO(p_run_id, 'E', v_mesg);
END;
PROCEDURE is_valid_filter
(p_mai_class_id IN NUMBER,
p_type_id IN NUMBER,
v_where CLOB) IS
v_tbl VARCHAR2(400 BYTE) := NULL;
BEGIN
SELECT type_name INTO v_tbl
FROM mai_filter_type
WHERE type_id = p_type_id;
EXECUTE IMMEDIATE 'SELECT run_id FROM ' || v_tbl || ' WHERE run_id = 0 AND '|| v_where;
END;
END TST_MAI_FILTER;
/