Input string was not in a correct format.

[realworld666]

System.FormatException: Input string was not in a correct format.
   at System.Number.ParseDouble(String value, NumberStyles options, NumberFormatInfo numfmt)
   at System.Double.Parse(String s)
   at Cyclestreets.Managers.RouteManager.<getroutesections>d__43.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Cyclestreets.Utils.MapUtils.<plotcachedroute>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<throwasync>b__3(Object state)
   at BugSense.Core.BugSenseSyncContextHandler.AsyncSynchronizationContext.<>c__DisplayClass10.<wrapcallback>b__f(Object state)