report with xml template problem

hello experts

i have created report with report builder and check it and it 's completed normal , when adding xml template it's completed with errors , when pressing view output i have no excel sheet but , xml tags only like note : the report contains Arabic words

<?xml version="1.0" encoding="ISO-8859-6" ?>

- <!--

 Generated by Oracle Reports version 10.1.2.3.0 

--> 

- <UNAPPLIED>

- <LIST_G_TRX_NUMBER>

- <G_TRX_NUMBER>

<PARTY_NAME>بٍت افتغكٍر افكصرٌ</PARTY_NAME>

<DAYS_OUTSTANDING>84</DAYS_OUTSTANDING>

<TRX_NUMBER>23394</TRX_NUMBER>

<TRX_DATE>07-DEC-19</TRX_DATE>

<ACCOUNT_NUMBER>1708</ACCOUNT_NUMBER>

<AMOUNT_DUE_REMAINING>.95</AMOUNT_DUE_REMAINING>

<NAME>30 NET</NAME>

</G_TRX_NUMBER>

and this is view log