How can I speed up GridSearchCV using parallel processing in Scikit-learn?

I am currently using GridSearchCV in Scikit-Learn to tune the hyperparameters of my machine learning model. However, it is taking a very long time to run, and I have heard that using parallel processing can speed up the process. I have tried to implement this using the n_jobs parameter, but I keep getting an error. Can someone help me understand how to use parallel processing with GridSearchCV, and suggest any improvements to my code?"