When I execute following shell script I am getting the following error

syntax error at line 50 : `<<' unmatched

What am I doing wrong

Script begins here
----------------

MPAN_FILE=$1

exec 3<$MPAN_FILE

while read -u3 -r Outcode Incode Depot
do
echo $Outcode
echo $Incode
echo $Depo

{
sqlplus -S abc/xyz <<EOF
set heading off feedback off serveroutput on

DECLARE
DEPO number;
BEGIN
-- Attempt to find the depo
SELECT DEPOT_CODE
INTO DEPO
FROM DEPOT
WHERE UPPER(DEPOT_LKVAL) = UPPER('${Depot}');

-- Found it, print the depo
DBMS_OUTPUT.PUT_LINE (Depo);

EXCEPTION
-- No depo
WHEN NO_DATA_FOUND THEN
SELECT -1
INTO Depo
FROM dual;
DBMS_OUTPUT.PUT_LINE (Depo);
WHEN OTHERS THEN
SELECT -2
INTO Depo
FROM dual;
DBMS_OUTPUT.PUT_LINE (Depo);
END;
/
EOF
} | read Depo

echo $Depo
if [ ${Depo} -ge 0 ]
then
echo 'Success'

{
sqlplus -S abc/xyz <<EOF
set heading off feedback off serveroutput on

DECLARE
Err number;
BEGIN
-- Attempt to Insert the data into depot_postal_area
INSERT INTO DEPOT_POSTAL_AREA
(SUPPLIER_CODE,DEPOT_CODE,POST_OUTCODE,POST_INCODE)
VALUES
(12,${Depo},'${Outcode}','${Incode}');

INSERT INTO DEPOT_POSTAL_AREA
(SUPPLIER_CODE,DEPOT_CODE,POST_OUTCODE,POST_INCODE)
VALUES
(13,${Depo},'${Outcode}','${Incode}');

Err := 0;
DBMS_OUTPUT.PUT_LINE (Err);
EXCEPTION
-- No depo
WHEN OTHERS THEN
SELECT -1
INTO Err
FROM dual;
DBMS_OUTPUT.PUT_LINE (Err);
END;
/
EOF
} | read Error

echo $Error

else
echo 'Failed'
fi
done

run the script with the 'set -x' set and debug the output.

I am getting the syntax error not the execution error.