From the client log:
[22:31:41.255] [Main Thread/WARN] [tML]: Silently Caught Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
at CeleryManPets.PetDisplayer.DisplayedPetRework.OnSpawn(Projectile projectile, IEntitySource source) in CeleryManPets\PetDisplayer\DisplayedPetRework.cs:line 25
at Terraria.ModLoader.ProjectileLoader.OnSpawn(Projectile projectile, IEntitySource source) in tModLoader\Terraria\ModLoader\ProjectileLoader.cs:line 135
at DMD<System.Int32 Terraria.Projectile:NewProjectile(Terraria.DataStructures.IEntitySource, System.Single, System.Single, System.Single, System.Single, System.Int32, System.Int32, System.Single, System.Int32, System.Single, System.Single, System.Single)>(IEntitySource spawnSource, Single X, Single Y, Single SpeedX, Single SpeedY, Int32 Type, Int32 Damage, Single KnockBack, Int32 Owner, Single ai0, Single ai1, Single ai2)
at CalamityMod.ILEditing.ILChanges.IncorporateMinionExplodingCountdown(orig_NewProjectile_IEntitySource_float_float_float_float_int_int_float_int_float_float_float orig, IEntitySource spawnSource, Single x, Single y, Single xSpeed, Single ySpeed, Int32 type, Int32 damage, Single knockback, Int32 owner, Single ai0, Single ai1, Single ai2)
at Hook<System.Int32 CalamityMod.ILEditing.ILChanges::IncorporateMinionExplodingCountdown(Terraria.On_Projectile+orig_NewProjectile_IEntitySource_float_float_float_float_int_int_float_int_float_float_float,Terraria.DataStructures.IEntitySource,System.Single,System.Single,System.Single,System.Single,System.Int32,System.Int32,System.Single,System.Int32,System.Single,System.Single,System.Single)>(IEntitySource , Single , Single , Single , Single , Int32 , Int32 , Single , Int32 , Single , Single , Single )
at Redemption.RedeDetours.TrailCheck(orig_NewProjectile_IEntitySource_float_float_float_float_int_int_float_int_float_float_float orig, IEntitySource spawnSource, Single X, Single Y, Single SpeedX, Single SpeedY, Int32 Type, Int32 Damage, Single KnockBack, Int32 Owner, Single ai0, Single ai1, Single ai2)
at Hook<System.Int32 Redemption.RedeDetours::TrailCheck(Terraria.On_Projectile+orig_NewProjectile_IEntitySource_float_float_float_float_int_int_float_int_float_float_float,Terraria.DataStructures.IEntitySource,System.Single,System.Single,System.Single,System.Single,System.Int32,System.Int32,System.Single,System.Int32,System.Single,System.Single,System.Single)>(IEntitySource , Single , Single , Single , Single , Int32 , Int32 , Single , Int32 , Single , Single , Single )
at TerrariaOverhaul.Common.Hooks.Items.ItemOnShootProjectileImplementation.<>c.<Load>b__0_0(orig_NewProjectile_IEntitySource_float_float_float_float_int_int_float_int_float_float_float orig, IEntitySource entitySource, Single x, Single y, Single speedX, Single speedY, Int32 type, Int32 damage, Single knockback, Int32 owner, Single ai0, Single ai1, Single ai2)
at Hook<System.Int32 TerrariaOverhaul.Common.Hooks.Items.ItemOnShootProjectileImplementation/<>c::<Load>b__0_0(Terraria.On_Projectile+orig_NewProjectile_IEntitySource_float_float_float_float_int_int_float_int_float_float_float,Terraria.DataStructures.IEntitySource,System.Single,System.Single,System.Single,System.Single,System.Int32,System.Int32,System.Single,System.Int32,System.Single,System.Single,System.Single)>(IEntitySource , Single , Single , Single , Single , Int32 , Int32 , Single , Int32 , Single , Single , Single )
at TerrariaOverhaul.Common.Hooks.Npcs.NpcOnShootProjectileImplementation.<>c.<Load>b__0_0(orig_NewProjectile_IEntitySource_float_float_float_float_int_int_float_int_float_float_float orig, IEntitySource entitySource, Single x, Single y, Single speedX, Single speedY, Int32 type, Int32 damage, Single knockback, Int32 owner, Single ai0, Single ai1, Single ai2)
at Hook<System.Int32 TerrariaOverhaul.Common.Hooks.Npcs.NpcOnShootProjectileImplementation/<>c::<Load>b__0_0(Terraria.On_Projectile+orig_NewProjectile_IEntitySource_float_float_float_float_int_int_float_int_float_float_float,Terraria.DataStructures.IEntitySource,System.Single,System.Single,System.Single,System.Single,System.Int32,System.Int32,System.Single,System.Int32,System.Single,System.Single,System.Single)>(IEntitySource , Single , Single , Single , Single , Int32 , Int32 , Single , Int32 , Single , Single , Single )
at SyncProxy<System.Int32 Terraria.Projectile:NewProjectile(Terraria.DataStructures.IEntitySource, System.Single, System.Single, System.Single, System.Single, System.Int32, System.Int32, System.Single, System.Int32, System.Single, System.Single, System.Single)>(IEntitySource , Single , Single , Single , Single , Int32 , Int32 , Single , Int32 , Single , Single , Single )
at GalacticMod.NPCs.Bosses.PreHM.DesertSpirit.AI()
at Terraria.ModLoader.NPCLoader.AI(NPC npc)
at Terraria.NPC.UpdateNPC_Inner(Int32 i)
at DMD<System.Void Terraria.NPC:UpdateNPC(System.Int32)>(NPC this, Int32 i)
at CatalystMod.CatalystDetours.NPC_UpdateNPC(orig_UpdateNPC orig, NPC self, Int32 i)
at Hook<System.Void CatalystMod.CatalystDetours::NPC_UpdateNPC(Terraria.On_NPC+orig_UpdateNPC,Terraria.NPC,System.Int32)>(NPC , Int32 )
at SyncProxy<System.Void Terraria.NPC:UpdateNPC(System.Int32)>(NPC , Int32 )
at DMD<System.Void Terraria.Main:DoUpdateInWorld(System.Diagnostics.Stopwatch)>(Main this, Stopwatch sw)
at Hook<System.Void Avalon.Hooks.HellcastleFog::On_Main_DoUpdateInWorld(Terraria.On_Main+orig_DoUpdateInWorld,Terraria.Main,System.Diagnostics.Stopwatch)>(Main , Stopwatch )
at SyncProxy<System.Void Terraria.Main:DoUpdateInWorld(System.Diagnostics.Stopwatch)>(Main , Stopwatch )
at DMD<System.Void Terraria.Main:DoUpdate(Microsoft.Xna.Framework.GameTime&)>(Main this, GameTime& gameTime)
at TerrariaOverhaul.Core.Time.TimeSystem.OnDoUpdate(orig_DoUpdate orig, Main main, GameTime& gameTime)
at Hook<System.Void TerrariaOverhaul.Core.Time.TimeSystem::OnDoUpdate(Terraria.On_Main+orig_DoUpdate,Terraria.Main,Microsoft.Xna.Framework.GameTime&)>(Main , GameTime& )
at SyncProxy<System.Void Terraria.Main:DoUpdate(Microsoft.Xna.Framework.GameTime&)>(Main , GameTime& )
at DMD<System.Void Terraria.Main:Update(Microsoft.Xna.Framework.GameTime)>(Main this, GameTime gameTime)
at Hook<System.Void ThoriumMod.UI.ThoriumInterfaceResources::OnResolutionChanged(Terraria.On_Main+orig_Update,Terraria.Main,Microsoft.Xna.Framework.GameTime)>(Main , GameTime )
at SyncProxy<System.Void Terraria.Main:Update(Microsoft.Xna.Framework.GameTime)>(Main , GameTime )
at Microsoft.Xna.Framework.Game.Tick()
at Microsoft.Xna.Framework.Game.RunLoop()
at Microsoft.Xna.Framework.Game.Run()
at Terraria.Program.RunGame()
at Terraria.Program.LaunchGame_(Boolean isServer)
at Terraria.Program.LaunchGame(String[] args, Boolean monoArgs)
at Terraria.MonoLaunch.Main_End(String[] args)
at Terraria.MonoLaunch.<>c__DisplayClass1_0.<Main>b__1()