bugfix in new wallet

core/models/survex.py

@@ -254,9 +254,11 @@ class Wallet(models.Model):
 
 
     def get_ticks(self):
+        ticks = {}
         waldata = self.get_json()
         if not waldata:
-            return {}
+            ticks["W"] = "black"
+            return ticks
         ticks = {}
         
         # Initially, are there any required survex files present ?