Power Bi Report server don´t work

I believe I answered this in your other question here https://community.powerbi.com/t5/Report-Server/RLS-using-SSAS-tabluar-model-doesn-t-work-in-PBIRS/m-p/2377163#M23181 

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Anonymous wrote:

I put the other option and I have the following error

 

An unexpected error occurred

An unexpected error has occurred. Try again later.
Please try again later or contact support. If you contact support, please provide these details.

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Is your SSAS instance on a different server to PBIRS? If so have you configured Kerberos authentication?

If you have not configured this you need to do this in order for RLS to work - see https://docs.microsoft.com/en-us/power-bi/report-server/configure-kerberos-powerbi-reports 

If you have configured Kerberos and it was working previously you could be hitting this issue
https://darren.gosbell.com/2021/11/power-bi-report-server-an-unexpected-error-occurred-nov-2021/