navd: handle errors in parsing api response (#30977)

selfdrive/navd/navd.py

@@ -71,8 +71,11 @@ class RouteEngine:
         self.ui_pid = ui_pid[0]
 
     self.update_location()
+    try:
       self.recompute_route()
       self.send_instruction()
+    except Exception:
+      cloudlog.exception("navd.failed_to_compute")
 
   def update_location(self):
     location = self.sm['liveLocationKalman']
@@ -256,6 +259,9 @@ class RouteEngine:
     for i in range(self.step_idx + 1, len(self.route)):
       total_distance += self.route[i]['distance']
       total_time += self.route[i]['duration']
+      if self.route[i]['duration_typical'] is None:
+        total_time_typical += self.route[i]['duration']
+      else:
         total_time_typical += self.route[i]['duration_typical']
 
     msg.navInstruction.distanceRemaining = total_distance