Form is invalid if no file is uploaded

atst/forms/financial.py

@@ -218,5 +218,8 @@ class ExtendedFinancialForm(BaseFinancialForm):
 
     task_order = FileField(
         "Upload a copy of your Task Order",
-        validators=[FileAllowed(["pdf"], "Only PDF documents can be uploaded.")],
+        validators=[
+            FileAllowed(["pdf"], "Only PDF documents can be uploaded."),
+            Required(),
+        ],
     )

templates/requests/financial_verification.html

@@ -95,8 +95,13 @@
               validation='integer'
             ) }}
 
+            <div class="usa-input usa-input--validation--anything {% if f.task_order.errors %} usa-input--error {% endif %}">
               {{ f.task_order.label }}
               {{ f.task_order }}
+              {% for error in f.task_order.errors %}
+                <span class="usa-input__message">{{error}}</span>
+              {% endfor %}
+            </div>
           </fieldset>
         {% endif %}