Need Someone To Correct A SQL Error

Need someone that can correct the following error. Will provide the input and expected output once you determine you can very quickly correct query. I don't see anywhere a number is referenced.

Error starting at line : 1 in command -
DECLARE F UTL_FILE.FILE_TYPE; V_LINE VARCHAR2(32767);
Provider_Grouping_ID VARCHAR2(50);
Provider_Grouping_Name VARCHAR2(50);
hrp_description VARCHAR2(50);
BEGIN F := UTL_FILE.FOPEN('HE_DUMP', 'npg_update_description.txt', 'R');
IF UTL_FILE.IS_OPEN(F) THEN for i in 1 .. 1 loop utl_file.get_line(F, V_LINE);
end loop;
LOOP BEGIN UTL_FILE.GET_LINE(F, V_LINE, 32767); IF V_LINE IS NULL THEN EXIT;
END IF;
Provider_Grouping_ID := REGEXP_SUBSTR(V_LINE, '[^|]+', 1, 1);
Provider_Grouping_Name := REGEXP_SUBSTR(V_LINE, '[^|]+', 1, 2);
hrp_description := REGEXP_SUBSTR(V_LINE, '[^|]+', 1, 3);
DBMS_OUTPUT.PUT_LINE(Provider_Grouping_ID || ' ' || Provider_Grouping_Name || ' ' || ' ' || hrp_description);
UPDATE PAYOR_OLTP.NAMED_PROVIDER_GROUPING_BKP061322 T SET T.DSC = hrp_description
WHERE
T.NAMED_PRVDR_GROUPING_ID = Provider_Grouping_ID AND
T.PRVDR_GROUPING_NM = Provider_Grouping_Name;
COMMIT;
EXCEPTION WHEN NO_DATA_FOUND THEN EXIT;
END;
END LOOP;
END IF;
UTL_FILE.FCLOSE(F);
END;
Error report -
ORA-01722: invalid number
ORA-06512: at line 13
01722. 00000 - "invalid number"
*Cause: The specified number was invalid.
*Action: Specify a valid number.