Bug/Issue Chicken is crashing my game?

So I used the save editor a few times (rearranging my farm mostly and renaming my animals) I have a cat, two cows, a goat, three chickens, and a duck. Two of the three chickens stopped showing up in the animal list in the save editor and when I try to select them in game it crashes my game. I've looked in the error log and this is what I get;

Message: Object reference not set to an instance of an object.
InnerException:
Stack Trace: at StardewValley.Menus.AnimalQueryMenu..ctor(FarmAnimal animal)
at StardewValley.FarmAnimal.pet(Farmer who)
at StardewValley.Farm.checkAction(Location tileLocation, Rectangle viewport, Farmer who)
at StardewValley.Game1.tryToCheckAt(Vector2 grabTile, Farmer who)
at StardewValley.Game1.pressActionButton(KeyboardState currentKBState, MouseState currentMouseState, GamePadState currentPadState)
at StardewValley.Game1.UpdateControlInput(GameTime time)
at StardewValley.Game1.Update(GameTime gameTime)
at Microsoft.Xna.Framework.Game.Tick()
at Microsoft.Xna.Framework.Game.HostIdle(Object sender, EventArgs e)
at Microsoft.Xna.Framework.GameHost.OnIdle()
at Microsoft.Xna.Framework.WindowsGameHost.RunOneFrame()
at Microsoft.Xna.Framework.WindowsGameHost.ApplicationIdle(Object sender, EventArgs e)
at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at Microsoft.Xna.Framework.WindowsGameHost.Run()
at Microsoft.Xna.Framework.Game.RunGame(Boolean useBlockingRun)
at StardewValley.Program.Main(String[] args)

Can anyone help me figure out what I did wrong, I'm into my second year and i'm just about to get married, I don't want to reset yet!