The clinic where Joan Rivers suffered a fatal complication during a medical procedure has submitted an acceptable plan to correct problems uncovered during an investigation after her death, a federal health agency said Tuesday. The investigation, ordered by the federal Centers for Medicare and Medicaid Services, found the Yorkville Endoscopy clinic made several errors, including failing to keep proper medication records and snapping cellphone photos of Rivers while she was unconscious. It also found the Manhattan clinic failed to get informed consent for every procedure performed and failed to record Rivers' weight before the administration of sedation medication.