Dashboard

Hello,

we have created power Bi dashboard with excel spreadheet data  month ago and published with Power BI Services. 

staring sharing the dashboard with users and user able to view without any issues  so far

unexpectedly today  i see the message with "This Dashboard contains Power BI Pro content .only users that have power BI Pro will have access it"

can you please let me know why i am seeing this message suddenly? for Power BI Free license users will face an issue in futures?