[FIX] hr_expense: untranslated string

Closes #17255

addons/hr_expense/i18n/hr_expense.pot

@@ -1129,6 +1129,12 @@ msgstr ""
 msgid "The payment method used when the expense is paid by the company."
 msgstr ""
 
+#. module: hr_expense
+#: code:addons/hr_expense/wizard/hr_expense_register_payment.py:35
+#, python-format
+msgid "The payment amount must be strictly positive."
+msgstr ""
+
 #. module: hr_expense
 #: model:ir.ui.view,arch_db:hr_expense.hr_expense_planner
 msgid "The photo of the receipt and the description of the email will\n"

addons/hr_expense/wizard/hr_expense_register_payment.py

@@ -32,7 +32,7 @@ class HrExpenseRegisterPaymentWizard(models.TransientModel):
     @api.constrains('amount')
     def _check_amount(self):
         if not self.amount > 0.0:
-            raise ValidationError('The payment amount must be strictly positive.')
+            raise ValidationError(_('The payment amount must be strictly positive.'))
 
     @api.one
     @api.depends('journal_id')