What are the grounds for appeal from a judgment entered after a guilty or no contest plea?

We note that appellant has not obtained a certificate of probable cause, which is required by section 1237.5 when a defendant seeks to appeal from a judgment entered following a guilty or no contest plea. However, the notice of appeal states that the appeal is based upon the sentence imposed after his plea, and that the appeal does not affect the validity of the underlying plea. Therefore, we limit our review to determine if there are any meritorious issues that require further briefing relating to the sentence imposed. (People v. Kelly (2006) 40 Cal.4th 106.) Having done so, we conclude that there are no arguable issues on appeal.