Guys something went wrong with my sponsor and I need to find a new one is there anyway that I can find ??
I have no trick to find a replacement sponsor. However if I were you and if I was ready to take the risk to pay the AOS fees even if my case may be filed too late to be processed on time I would send my package tomorrow even without a sponsor. If you wait one more week for example it will probably mean game over for you even with a "perfect" package. The other members of the forum will correct me if I am wrong but I don't think a lack of financial support proof in your package will lead to a denial of your case without prior interview. In other words you can send your package now and get 3 or 4 additional weeks to gather financial support proof (including finding a sponsor) that you will bring at the interview.
If you have enough savings you may be able to convince the immigration officer even without sponsor. If not maybe your family or friends can lend you money ? The money would have been on your account for only one month at the date of the interview in such a case so it would be far from being perfect but probably better than nothing.