[FIX] better Xpath expression

report/ir_actions_report_templates.xml

@@ -3,6 +3,6 @@
      License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->
 <odoo>
      <template id="report_saleorder_document" inherit_id="sale.report_saleorder_document">
-         <xpath expr="//div[@id='informations']/div[4]" position="replace"/>
+         <xpath expr="//div[@id='informations']//div[@t-if='doc.user_id.name']" position="replace"/>
      </template>
 </odoo>