Realm sync deploy error

since today, I’m unable to terminate sync on my realms. I’m getting the following error.

only [uri, clusterId, clusterName, clusterType, clusterSize, clusterUpdated, dbUsername, dbPassword, lastUpdated, wireProtocolEnabled, regionName, groupName, orgName, namespacePreimageConfigs, readPreference, readPreferenceTagSets, sync, sync_query, connect_through_mesh] are allowed config options

Does someone knows how to solve this issue.
best regards.