The error concerning port width or dimension is a common issue encountered in Simulink, typically triggered when there is a mismatch in the signal dimensions. This inconsistency arises when the size of the signal element expected by a specific block does not align with the actual size being provided.
The '?' symbol signifies that the dimensions are not consistent. To effectively resolve this issue, it is crucial to look into the details of the error message. The error message will provide insights into both the dimension of the output signal and the dimension expected by the block.
Additionally, you may navigate to ‘Format -> Port/Signal Displays -> Signal Dimensions’ which will display the dimensions of the various signals in your model, further aiding in the identification and correction of the dimension mismatch.
