changed to ffc

CAD/leo_headphones/leo_headphones.kicad_pro

@@ -48,7 +48,13 @@
           "min_clearance": 0.508
         }
       },
-      "diff_pair_dimensions": [],
+      "diff_pair_dimensions": [
+        {
+          "gap": 0.0,
+          "via_gap": 0.0,
+          "width": 0.0
+        }
+      ],
       "drc_exclusions": [],
       "meta": {
         "filename": "board_design_settings.json",
@@ -113,8 +119,15 @@
         "min_via_diameter": 0.39999999999999997,
         "use_height_for_length_calcs": true
       },
-      "track_widths": [],
-      "via_dimensions": [],
+      "track_widths": [
+        0.0
+      ],
+      "via_dimensions": [
+        {
+          "diameter": 0.0,
+          "drill": 0.0
+        }
+      ],
       "zones_allow_external_fillets": false,
       "zones_use_no_outline": true
     },
@@ -413,7 +426,7 @@
   },
   "sheets": [
     [
-      "adb5cfde-815c-408c-9ec5-e097a315379e",
+      "b8c83ad1-b3c9-495c-bdc6-62dead00f5ad",
       ""
     ]
   ],