Sync with icloud doesn't work

The sync between icloud and my ipad and my mac doesn't, for all services (icloud drive, Ibooks...) My mac is running Catalina 10.15.3 My ipad is running Ios 13.3.1 Nothing is sync on the devices but the data are available via icloud.com. Here's what I tried: - Sign off and sign in from I cloud. - Restart many times - Kill the bird process and deleting the ~/Library/Application Support/CloudDocs as described here https://apple.stackexchange.com/questions/313716/icloud-drive-wont-sync-on-mac Thanks Here are the bird logs (via brctl log): ERR 2020-03-17 20:45:57.392+0100] Terminal Failed getting container for URL: , error: Error Domain=BRCloudDocsErrorDomain Code=7 UserInfo={NSDescription=, NSFilePath= [note 2020-03-18 01:19:55.876+0100] revisiond Cache delete asked us to reclaim with urgency 1 [note 2020-03-18 01:19:56.881+0100] revisiond Cache delete asked us to reclaim with urgency 1 [note 2020-03-18 01:19:56.942+0100] revisiond Cache delete asked us to reclaim with urgency 1 [note 2020-03-18 01:19:57.014+0100] revisiond Cache delete asked us to reclaim with urgency 1 [WARN 2020-03-18 17:52:12.595+0100] revisiond This volume is runnning "" which is not supported [WARN 2020-03-18 17:52:12.595+0100] revisiond This volume is runnning "" which is not supported [CRIT 2020-03-18 18:51:36.306+0100] bird UNREACHABLE: can't open [ERR 2020-03-18 18:52:41.542+0100] com.apple.CloudDocs.MobileDocumentsFileProvider can't find image with size for [CRIT 2020-03-18 18:52:41.543+0100] com.apple.CloudDocs.MobileDocumentsFileProvider Provider returned error from domain BRCloudDocsErrorDomain which is unsupported. Supported error domains are N [note 2020-03-18 18:54:18.039+0100] revisiond device 1000015 had a metainfo file [note 2020-03-18 18:54:19.197+0100] revisiond device 1000015 UUID matches metadata [note 2020-03-18 18:54:19.214+0100] revisiond Quitting throttled mode on device 16777237 [note 2020-03-18 18:54:19.327+0100] revisiond Library on device 1000015, loaded status [ERR 2020-03-18 18:55:13.609+0100] Finder -[BRFrameworkContainerHelper br_capabilityToMoveFromURL:toNewParent:error:]: (passed to caller) error: Error Domain=BRCloudDocsErrorDomain Code=6 UserInf [ERR 2020-03-18 18:55:16.531+0100] Finder -[BRFrameworkContainerHelper br_capabilityToMoveFromURL:toNewParent:error:]: (passed to caller) error: Error Domain=BRCloudDocsErrorDomain Code=6 UserInf [CRIT 2020-03-18 18:55:25.728+0100] bird UNREACHABLE: can't open [ERR 2020-03-18 18:56:08.074+0100] Finder -[BRFrameworkContainerHelper br_capabilityToMoveFromURL:toNewParent:error:]: (passed to caller) error: Error Domain=BRCloudDocsErrorDomain Code=6 UserInf [CRIT 2020-03-18 19:00:31.546+0100] bird UNREACHABLE: can't open [CRIT 2020-03-18 19:05:32.194+0100] bird UNREACHABLE: can't open [CRIT 2020-03-18 19:11:06.303+0100] bird UNREACHABLE: can't open [ERR 2020-03-18 19:15:50.197+0100] bird fts_read() failed for path [2: No such file or directory] [CRIT 2020-03-18 19:15:50.914+0100] bird UNREACHABLE: can't open [CRIT 2020-03-18 19:16:36.120+0100] bird UNREACHABLE: can't open [CRIT 2020-03-18 19:22:06.120+0100] bird UNREACHABLE: can't open [CRIT 2020-03-18 19:27:31.578+0100] bird UNREACHABLE: can't open [CRIT 2020-03-18 19:32:35.818+0100] bird UNREACHABLE: can't open [ERR 2020-03-18 19:36:13.390+0100] Finder -[BRFrameworkContainerHelper br_capabilityToMoveFromURL:toNewParent:error:]: (passed to caller) error: Error Domain=BRCloudDocsErrorDomain Code=6 UserInf