Can a single witness provide sufficient evidence in a restraining order?

296 [" 'Since it is impossible to determine from the clerk's transcript what evidence the trial court heard and considered, this court must assume there was substantial evidence to support the order.' "]; see also Sabbah v. Sabbah, supra, 151 Cal.App.4th at p. 823 ["The testimony of a single witness may provide sufficient evidence."].) Therefore, we uphold the court's denial of Paul's request for a domestic violence restraining order.