Eric Adams’ veteran former top deputy said Sunday that lefty Mayor Zohran Mamdani made “rookie mistakes” in his budget planning, which has already spooked crucial bond-rating agencies . Moody’s and S&P Global Ratings warned last week that they are deeply concerned Mamdani wants to raid the city’s emergency-reserve funds to balance the budget. If the top-rated agencies downgrade the city’s credit rating, that could lead to higher interest rates for the Big Apple when it comes to it issuing bonds