System.NullReferenceException: Object reference not set to an instance of an object.
at ChensGradiusMod.GradiusModPlayer.MakeForceBattle() in ChensGradiusMod\GradiusModPlayer.cs:line 134
at ChensGradiusMod.GradiusModPlayer.OnHitNPCWithProj(Projectile proj, NPC target, Int32 damage, Single knockback, Boolean crit) in ChensGradiusMod\GradiusModPlayer.cs:line 120
at Terraria.ModLoader.PlayerHooks.OnHitNPCWithProj(Projectile proj, NPC target, Int32 damage, Single knockback, Boolean crit)
at Terraria.Projectile.Damage()
at Terraria.Projectile.Update(Int32 i)
at Terraria.Main.DoUpdate(GameTime gameTime)
at Terraria.Main.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 Terraria.Program.LaunchGame_()
at Terraria.Program.LaunchGame(String[] args, Boolean monoArgs)
at Terraria.WindowsLaunch.Main(String[] args)```