HELP! Is this supposed to happen on the cloud :-0 "errorDetails": "/opt/mule/mule-4.3.0/.mule/appname-1-0-3/objectstore/xxx/yyy.obj (No space left on device)" Thanks

The error is for Object Store, no more space is left in OS. The Object Store has a limitation on the storage, if you want to store more data and for longer period you can use database for that.