Game crash when subs fire on water passable land.

[muramasatheninja]

Game crashes when a submarine tries to fire over land. Got the following in the log.

OpenRA engine version prep-CA Combined Arms mod version 0.71 on map 6fd6e91e11d683c6c5374c19ed92cb2b4e8027e3 (Random Violence by Westwood Studios). Date: 2020-11-20 02:51:40Z Operating System: Linux (Unix 4.15.0.123) Runtime Version: Mono 6.4.0.198 (tarball Tue Sep 24 01:20:30 UTC 2019) CLR 4.0.30319.42000 Exception of type System.InvalidOperationException: Sequence contains no elements at System.Linq.Enumerable.Min[TSource,TResult] (System.Collections.Generic.IEnumerable1[T] source, System.Func2[T,TResult] selector) [0x000af] in <6f6cfe3dc7984568b6f7767c7378b138>:0 at OpenRA.Mods.Common.Activities.Attack.Tick (OpenRA.Actor self) [0x0003e] in /home/travis/build/Inq8/CAmod/engine/OpenRA.Mods.Common/Activities/Attack.cs:98 at OpenRA.Activities.Activity.TickOuter (OpenRA.Actor self) [0x00084] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.Traits.ActivityUtils.RunActivity (OpenRA.Actor self, OpenRA.Activities.Activity act) [0x00015] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.Actor.Tick () [0x0000f] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.World.Tick () [0x00123] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.Game.InnerLogicTick (OpenRA.Network.OrderManager orderManager) [0x001bc] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.Game.LogicTick () [0x0003e] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.Game.Loop () [0x000f1] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.Game.Run () [0x0003c] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.Game.InitializeAndRun (System.String[] args) [0x00010] in <69e2dd9a0d584cc39b01a39591bbee59>:0 at OpenRA.Program.Main (System.String[] args) [0x00044] in <69e2dd9a0d584cc39b01a39591bbee59>:0