
Post by
zezo | 2018-01-10 | 21:41:42
The router returns empty result if you happen to run in in the exact second or two when the new winds replace the old winds at the update times. And that happens every 10 or 20 minutes in a 2-hour window, so the chance is not very small.
Then you may need to do the route from a new position to avoid the caching of bad data.