Power Bi Embedded Row Level Security

Hi everyone,

I have been trying to implement row-level security in my power bi embedded report in my web page using this link:https://docs.microsoft.com/en-us/azure/power-bi-embedded/power-bi-embedded-iframe , but whenever I add username, role and scp in token 2 the output changes into "The content is'nt available" ,(Without adding these parameters my report works fine ). Any idea what I might be doing wrong?(There is no problem in my RLS rule either)

Thanks.