Job Offer Dragon 1976

I am looking for a job since January and excited to receive a job offer this Wed. Then I negotiated for the salary and company agreed. As I am waiting for the revised offer, the agency called me today, Friday, that the position is now on-hold.
I got confused now and feel sad about this.
I felt something is wrong.
Can you please tell me if the agency is telling the truth and am I soon getting a new job?
Thanks a lot!