modified the error message; updated the formatting of the code

src/registrar/templates/domain_base.html

@@ -26,9 +26,9 @@
       {% if not domain.domain_info %}
         <div class="usa-alert usa-alert--error margin-bottom-2">
           <div class="usa-alert__body">
-            <h4 class="usa-alert__heading larger-font-sizing">Error!</h4>
+            <h4 class="usa-alert__heading larger-font-sizing">Domain missing domain information</h4>
             <p class="usa-alert__text ">
-              You are attempting to manage a domain, {{ domain.name }}, which does not have a Domain Information object. Please correct this in the admin.
+              You are attempting to manage a domain, {{ domain.name }}, which does not have a domain information object. Please correct this in the admin by editing the domain, and adding domain information, as appropriate.
             </p>
           </div>
         </div>

src/registrar/tests/test_views.py

@@ -1293,8 +1293,8 @@ class TestDomainOverview(TestWithDomainPermissions, WebTest):
         # in the session to emulate user clicking Manage Domain
         # in the admin interface
         session = self.client.session
-        session['analyst_action'] = 'foo'
-        session['analyst_action_location'] = self.domain_no_information.id
+        session["analyst_action"] = "foo"
+        session["analyst_action_location"] = self.domain_no_information.id
         session.save()
 
         detail_page = self.client.get(
@@ -1302,7 +1302,7 @@ class TestDomainOverview(TestWithDomainPermissions, WebTest):
         )
 
         self.assertContains(detail_page, "noinformation.gov")
-        self.assertContains(detail_page, "Error")
+        self.assertContains(detail_page, "Domain missing domain information")
 
 
 class TestDomainManagers(TestDomainOverview):

src/registrar/views/utility/mixins.py

@@ -99,7 +99,7 @@ class DomainPermission(PermissionsLoginMixin):
         requested_domain = None
         if DomainInformation.objects.filter(id=pk).exists():
             requested_domain = DomainInformation.objects.get(id=pk)
-        
+
         # if no domain information or application exist, the user
         # should be able to manage the domain; however, if domain information
         # and domain application exist, and application is not in valid status,