adding access permissions to output folder failed

[jsotiriou]

Hi,
this is the log when i press play button:
Initializing SSAS diagnostics collection at 10/30/2019 16:46:19 UTC+02:00.
Collection service SSASDiag_MSSQLServer started.
Initialized service for trace with ID: _2019-10-30_14-46-19_UTC_SSASDiag
Collecting on computer .
Collecting for instance Default instance (MSSQLServer).
The version of the instance is 14.0.1.439 - RTM.
The edition of the instance is EnterpriseCore64.
The instance mode is Multidimensional.
The log folder for the instance is E:\OLAP\Log.
The msmdsrv.ini configuration for the instance at C:\Program Files\Microsoft SQL Server\MSAS14.MSSQLSERVER\OLAP\Config.
Created temporary folder _2019-10-30_14-46-19_UTC_SSASDiag to collect diagnostic files.
Adding access permissions for SSAS service \SSASuser to output folder failed:
Some or all identity references could not be translated. .

The green turned grey and \SSASuser does not exists for sure
I ran the application with "run as administrator" and there is no way to stop it except if I killed the service

thanks in advance
jim

[I think I solved the issue]
It just needs to create SSASuser in the domain