qemu-img command doesn't create the qcow2 file

I am using a macOS 12.2.1 with m1 chip. I successfully installed qemu using brew. I am trying to convert my ubuntu iso file to qcow2. When I run, >qemu-img create -f qcow2 ubuntu-20.04.3-live-server-arm64.iso 20G I get the output, >Formatting 'ubuntu-20.04.3-live-server-arm64.iso', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=21474836480 lazy_refcounts=off refcount_bits=16 which is pretty right, I guess, but it doesn't create the qcow2 file, cause when I run 'ls' it gives >ubuntu-20.04.3-live-server-arm64.iso What have I done wrong? Please help.