T_STRING error on try add new template custom

[testebr]

I try create a new template with this content:

<?xml version="1.0" encoding="UTF-8"?>
..
...
....

But I get this error:

The following error occurred when attempting to evaluate this template:

Parse error: parse error, unexpected T_STRING in my_board_patch\includes\adminfunctions_template.ph p(3587) : eval()'d code(1) : eval()'d code on line 1

This is likely caused by a malformed conditional statement. It is highly recommended that you fix this error before continuing, but you may continue as-is if you wish.

How to add this line <?xml version="1.0" encoding="UTF-8"?> with success?