It seems like you are trying to add two signals using the "add" block in Simulink, but encountering an error when trying to connect the output of the "add" block to the scope. The error message suggests that you need to insert either the "timed to event signal" or the "timed to event function-call" block from the gateways library.
This error message may indicate that the signals you are trying to add have different sample times or data types. The "timed to event" blocks can be used to synchronize signals with different sample times or to convert signals between different data types.
You can try inserting the "timed to event signal" or "timed to event function-call" block between the output of the "add" block and the scope to see if this resolves the error. Alternatively, you can try adjusting the sample times or data types of the signals to ensure they are compatible for addition.
It's also possible that there may be other issues with your Simulink model that are causing the error, so you may want to review your model and check for any other potential issues.
