error log under spoiler
```
[17:49:03.597] [Main Thread/WARN] [tML]: Silently Caught Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
at RealisticSky.Content.Atmosphere.AtmosphereRenderer.RenderToTarget() in RealisticSky\Content\Atmosphere\AtmosphereRenderer.cs:line 40
at RealisticSky.Content.Atmosphere.AtmosphereTargetContent.HandleUseReqest(GraphicsDevice device, SpriteBatch spriteBatch) in RealisticSky\Content\Atmosphere\AtmosphereTargetContent.cs:line 21
at DMD(Main this, GameTime gameTime)
at SyncProxy(Main , GameTime )
at Terraria.Main.Draw_Inner(GameTime gameTime) in tModLoader\Terraria\Main.cs:line 52909
at Terraria.Main.Draw(GameTime gameTime) in tModLoader\Terraria\Main.cs:line 52896
at Microsoft.Xna.Framework.Game.Tick() in D:\a\tModLoader\tModLoader\FNA\src\Game.cs:line 562
at Microsoft.Xna.Framework.Game.RunLoop() in D:\a\tModLoader\tModLoader\FNA\src\Game.cs:line 878
at Microsoft.Xna.Framework.Game.Run() in D:\a\tModLoader\tModLoader\FNA\src\Game.cs:line 419
at Terraria.Program.RunGame() in tModLoader\Terraria\Program.cs:line 266
at Terraria.Program.LaunchGame_(Boolean isServer) in tModLoader\Terraria\Program.cs:line 240
at Terraria.Program.LaunchGame(String[] args, Boolean monoArgs) in tModLoader\Terraria\Program.cs:line 213
at Terraria.MonoLaunch.Main_End(String[] args) in tModLoader\Terraria\MonoLaunch.cs:line 78
at Terraria.MonoLaunch.<>c__DisplayClass1_0.b__1() in tModLoader\Terraria\MonoLaunch.cs:line 64
at System.Threading.Thread.StartCallback()
[17:49:03.598] [Main Thread/ERROR] [Terraria]: System.NullReferenceException: Object reference not set to an instance of an object.
at RealisticSky.Content.Atmosphere.AtmosphereRenderer.RenderToTarget() in RealisticSky\Content\Atmosphere\AtmosphereRenderer.cs:line 40
at RealisticSky.Content.Atmosphere.AtmosphereTargetContent.HandleUseReqest(GraphicsDevice device, SpriteBatch spriteBatch) in RealisticSky\Content\Atmosphere\AtmosphereTargetContent.cs:line 21
at DMD(Main this, GameTime gameTime)
at SyncProxy(Main , GameTime )
at Terraria.Main.Draw_Inner(GameTime gameTime) in tModLoader\Terraria\Main.cs:line 52919
at Terraria.Main.Draw(GameTime gameTime) in tModLoader\Terraria\Main.cs:line 52900
[17:49:03.674] [Main Thread/FATAL] [tML]: Main engine crash
Tip: This is likely a mod's fault. Disable mods one by one and check if the issue persists
System.NullReferenceException: Object reference not set to an instance of an object.
at RealisticSky.Content.Atmosphere.AtmosphereRenderer.RenderToTarget() in RealisticSky\Content\Atmosphere\AtmosphereRenderer.cs:line 40
at RealisticSky.Content.Atmosphere.AtmosphereTargetContent.HandleUseReqest(GraphicsDevice device, SpriteBatch spriteBatch) in RealisticSky\Content\Atmosphere\AtmosphereTargetContent.cs:line 21
at DMD(Main this, GameTime gameTime)
at SyncProxy(Main , GameTime )
at Terraria.Main.Draw_Inner(GameTime gameTime) in tModLoader\Terraria\Main.cs:line 52919
at Terraria.Main.Draw(GameTime gameTime) in tModLoader\Terraria\Main.cs:line 52900
at Microsoft.Xna.Framework.Game.Tick() in D:\a\tModLoader\tModLoader\FNA\src\Game.cs:line 562
at Microsoft.Xna.Framework.Game.RunLoop() in D:\a\tModLoader\tModLoader\FNA\src\Game.cs:line 878
at Microsoft.Xna.Framework.Game.Run() in D:\a\tModLoader\tModLoader\FNA\src\Game.cs:line 419
at Terraria.Program.RunGame() in tModLoader\Terraria\Program.cs:line 266
[17:49:03.674] [Main Thread/DEBUG] [TerrariaSteamClient]: Send: shutdown
```
This error only happens on reload, not when initially loading mods.