It’s 1500 minutes a month, not hours! And, unfortunately, that is only for Linux machines. See here - MacOS machines always cost something. The Apple licenses to run them are probably not free for CircleCI, either.
I expect you had a free trial, and that has now expired.
Thank you for your reply. I dont think I have utilized all 1500 mins and I dont remember opting for a free trial. I am trying to figure How can I know the exact reason for this failure.
Right. So you managed to not mention a critical piece of information, which is that you want to use the Linux platform. Please try to offer as much information as you possibly can when posting here - it saves everyone’s time, including yours.