upd

hp3478a-fram-6l/hp3478a-fram-6l.kicad_prl

@@ -1,6 +1,6 @@
 {
   "board": {
-    "active_layer": 7,
+    "active_layer": 6,
     "active_layer_preset": "",
     "auto_track_width": true,
     "hidden_netclasses": [],
@@ -49,7 +49,7 @@
       "conflict_shadows",
       "shapes"
     ],
-    "visible_layers": "00000000_00000000_00000002_2200888d",
+    "visible_layers": "00000000_00000000_00000002_220088dd",
     "zone_display_mode": 0
   },
   "git": {

hp3478a-fram-6l/hp3478a-fram-6l.kicad_pro

@@ -461,6 +461,7 @@
       "single_global_label": "ignore",
       "unannotated": "error",
       "unconnected_wire_endpoint": "warning",
+      "undefined_netclass": "error",
       "unit_value_mismatch": "error",
       "unresolved_variable": "error",
       "wire_dangling": "error"