If you are recieving the following message when trying to "load" (o.load / o.reload RemoverTool) in the console, after noticing it isn't functioning on your server any longer. 

Error while compiling RemoverTool: The type 'System.Collections.Generic.HashSet<BaseEntity>' cannot be used as type parameter 'T' in the generic type or method 'Pool.Free<T>(ref T)'. There is no implicit reference conversion from 'System.Collections.Generic.HashSet<BaseEntity>' to 'Facepunch.Pool.IPooled'.

Look into the patch notes for the September 5th 2024 Rust Update. A new Developer in the performance division has stated a new code process is being installed and a few things will no longer work. This pertains to many mods / plugins including this one... The mod / plugin developer will have to essentially re-write how to plugin works, and / or, how certain subjects within the mod / plugin function. 

Hope this Helps!