Why get printing zpl code as image

this code in print format
^XA
^FO15,10
^A0N,30,30^FD Pharamcy ^FS

                ^FO20,45
                ^CF0,13
                ^FB250,10,,C
               
                {% if item.item_name|length > 35 %}
                 ^FD{{item.item_name[:30]}}\&{{item.item_name[30:]}}\&^FS
                {%else%}
                  ^FD {{item.item_name}}\& ^FS
                {%endif%}
                
                ^BY2,2,40
                ^FO15,85^BC^FD {{item.batch_no}} ^FS
                
                ^CF0,13
                {%if item.item_tax_template%}
                    ^FO20,160^FD{{currency}} {{item_price + (item_price * tax_amount)}}^FS
                    ^FO110,160^FD Incl.VAT ^FS
                {%else%}
                    ^FO20,160^FD {{currency}} {{item_price}} ^FS
                    ^FO110,160^FD No VAT ^FS
                {%endif%}
                
                ^FO200,160^FD  056663331 ^FS

        ^XZ

https://docs.erpnext.com/docs/v13/user/manual/en/setting-up/print/raw-printing

Check the Raw Printing option in Print Format and also enable Raw Printing in Print Settings.