Hello, I'm new to this community and I'm having trouble with loading binary file from U-Boot

I used mmc 0:2 and the location of the binary file named hello_world_m40.bin is at /home/root

From picture above, I tried running hello world file in Cortex-M in mmc 0:2. But it said that Failed to load '/home/root/hello_world_m40.bin'.
I'd really appreciate any guidance. Thank you.