EDIT: This may NOT BE THE FAULT OF THE DEV OF THIS LIBRARY. It appears that the imports for these references were auto-cleaned up by the git-commit automatically removing redundant declarations. This is user error. Old review left for visibility, but this is a perfect library actually. Works initially but when re-opening the project, fails every single time. SimpleTextChat.razor(10,34): error CS1061: 'List<SimpleTextChatSystem.ChatEntry>' does not contain a definition for 'TakeLast' and no accessible extension method 'TakeLast' accepting a first argument of type 'List<SimpleTextChatSystem.ChatEntry>' could be found (are you missing a using directive or an assembly reference?) SimpleTextChat.razor(11,34): error CS1061: 'List<SimpleTextChatSystem.ChatEntry>' does not contain a definition for 'Where' and no accessible extension method 'Where' accepting a first argument of type 'List<SimpleTextChatSystem.ChatEntry>' could be found (are you missing a using directive or an assembly reference?) SimpleTextChat.razor(196,48): error CS1061: 'List<SimpleTextChatSystem.ChatEntry>' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'List<SimpleTextChatSystem.ChatEntry>' could be found (are you missing a using directive or an assembly reference?) SimpleTextChat.razor(197,12): error CS0103: The name 'HashCode' does not exist in the current context SimpleTextChat.razor(198,10): error CS0103: The name 'HashCode' does not exist in the current context