Fossil/natural slopes bug

[17:44:59.419] [Error] Exception while calling script init: (LuaException) Error code 2, [string "/interface/games/fossilgame/level.lua"]:16: attempt to call a nil value (field 'errorInfo')
stack traceback:
	[C]: in field 'errorInfo'
	[string "/interface/games/fossilgame/level.lua"]:16: in global 'checkD'
	[string "/interface/games/fossilgame/level.lua"]:37: in method 'new'
	[string "/interface/games/fossilgame/generator.lua"]:20: in method 'generate'
	[string "/interface/games/fossilgame/fossilgame.lua"]:67: in global 'initGame'
	[string "/interface/games/fossilgame/fossilgame.lua"]:18: in function <[string "/interface/games/fossilgame/fossilgame.lua"]:9>
[0] 7ff750d4a7f3 Star::captureStack
[1] 7ff750d4957e Star::StarException::StarException
[2] 7ff750d1d5c1 Star::LuaEngine::handleError
[3] 7ff750efe84b Star::LuaEngine::callFunction<>
[4] 7ff750f023a3 Star::LuaFunction::invoke<Star::Variant<Star::Empty,bool,__int64,double,Star::LuaString,Star::LuaTable,Star::LuaFunction,Star::LuaThread,Star::LuaUserData> >
[5] 7ff75138043f Star::LuaContext::invokePath<Star::Variant<Star::Empty,bool,__int64,double,Star::LuaString,Star::LuaTable,Star::LuaFunction,Star::LuaThread,Star::LuaUserData> >
[6] 7ff751381d37 Star::LuaBaseComponent::init
[7] 7ff7515988ad Star::ScriptPane::displayed
[8] 7ff7514d2479 Star::PaneManager::displayPane
[9] 7ff75155fe0d Star::MainInterface::handleInteractAction
[10] 7ff750c9618f Star::ClientApplication::updateRunning
[11] 7ff750c9494d Star::ClientApplication::update
[12] 7ff75145d071 Star::SdlPlatform::run
[13] 7ff75145d22d Star::runMainApplication
[14] 7ff750c97941 WinMain
[15] 7ff75164079f __scrt_common_main_seh
[16] 7ffd21097e94 BaseThreadInitThunk
[17] 7ffd232b7ad1 RtlUserThreadStart
[17:45:10.293] [Info] UniverseClient: Client disconnecting...
[17:45:10.368] [Info] Client received world stop packet, leaving: Removed
[17:45:10.373] [Info] UniverseServer: Client 'Moira' <1> (local) disconnected for reason:
[17:45:10.374] [Info] UniverseServer: Stopping idle world CelestialWorld:131811342:867594754:7921059:6:2
[17:45:10.794] [Info] UniverseServer: Stopping UniverseServer
[17:45:10.804] [Info] Deleting discord server lobby 599989719820009483
[17:45:11.005] [Error] Could not connect delete server lobby (err 0)
[17:45:12.487] [Info] Application: quit requested
[17:45:12.487] [Info] Application: quitting...
[17:45:12.487] [Info] Application: shutdown...
[17:45:12.788] [Info] Root: Shutting down Root
[17:45:14.203] [Info] Application: Destroying SDL Window
[17:45:14.257] [Info] Deleting discord server lobby 599989719820009483
[17:45:14.262] [Info] Application: stopped gracefully