More helpful message

lmfdb/groups/abstract/main.py

@@ -2936,7 +2936,11 @@ def group_data(label, ambient=None, aut=False, profiledata=None):
         # dealing with groups identified in magma but not in gap so can't do live pages˚
         ord = label.split(".")[0]
         if missing_subs(int(ord)) and gp.source == "Missing":
-            return Markup("No additional information for this group of order " + ord + " is available.")
+            ans = 'The group {} is not available in GAP, but see the list of <a href="{}">{}</a>.'.format(
+                label,
+                f"/Groups/Abstract/?subgroup_order={ord}&ambient={ambient}&search_type=Subgroups",
+                "subgroups with this order")
+            return Markup(ans)
         ans = f"Group ${gp.tex_name}$: "
         ans += create_boolean_string(gp, type="knowl")
         ans += f"<br />Label: {gp.label}<br />"