It is a sandbox, however I tried it on a devbox which has the exact the same version, it got the same error message. And I see the same issue on the version as below.
And here is the log from the event viewer. Is it that possible a D365 FO bug?
EventData
EventName ExceptionDetails
d365EnvironmentId {6DF1CF2A-B220-453E-B38E-D28E88115B31}
ActivityId {85534398-CE53-0000-BF19-558553CED601}
dixfActivityId {85534398-CE53-0000-BF19-558553CED601}
executionID
dataProject
source ExceptionHelper.GetExceptionDetails
entityName
targetEntityName
message
executionContext
exceptionDetails Source: Microsoft.Dynamics.AX.Framework.Tools.DMF.SSISHelper HResult: 0x80004003 Details: System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.Dynamics.AX.Framework.Tools.DMF.SSISHelper.DMFEntityDBHelper.PublishSchema(String targetConnectionString, String sourceConnectionString, String stagingTable, Dictionary`2 additionalColumns, Boolean isDataArea, Boolean forceUpdate, Boolean isColumnStoreIndex, String[] targetXMLFields) at Microsoft.Dynamics.AX.Framework.Tools.DMF.SSISHelperService.Service.ServiceHelper.PublishSchemaWithLock(DMFEntityDBHelper entityDBHelper)
SqlQuery
details { "ErrorCode": "" }
parameters