I also encountered this error, have you fixed the problem? My iCloud storage space is full, but I am unable to retrieve the 'Quota exceeded' error.
When I tried to add data to Core data using NSPersistentCloudKitContainer, I got an error:
<CKError 0x600000c15890: "Quota Exceeded" (25/2035); server message = "Quota exceeded"; op = 1ECF73B9554DF79F; uuid = 34D12DF0-A307-49EB-AD3A-BB646FF66F54; Retry after 316.0 seconds>
}>
Topic:
iCloud
SubTopic:
iCloud & CloudKit Q&A