Improve the instance-view page in observatory.

runtime/bin/vmservice/client/lib/src/elements/instance_ref.html

Index: runtime/bin/vmservice/client/lib/src/elements/instance_ref.html
diff --git a/runtime/bin/vmservice/client/lib/src/elements/instance_ref.html b/runtime/bin/vmservice/client/lib/src/elements/instance_ref.html
index 98e62f135ad6bf371328d14665f5d5af478e7257..e03e1d28477497cb6e2ea297805338355f1e110c 100644
--- a/runtime/bin/vmservice/client/lib/src/elements/instance_ref.html
+++ b/runtime/bin/vmservice/client/lib/src/elements/instance_ref.html
@@ -8,12 +8,16 @@
     <style>
       .member {
         vertical-align: top;
-        padding: 0 0 0 1em;
+        padding: 1px 0 1px 1em;
       }
     </style>
     <div>
       <template if="{{ isUnexpected(ref.serviceType) }}">
-        unexpected reference type &lt;{{ ref['type'] }}&gt;
+        unexpected reference type &lt;{{ ref.serviceType }}&gt;
+      </template>
+
+      <template if="{{ isError(ref.serviceType) }}">
+        <pre>{{ ref.message }}</pre>
       </template>
 
       <template if="{{ isNull(ref.serviceType) }}">