The root file system of buildreoot prompts "depmod:applt not found"

1. First step , compile buildboot Medium busybox
   sudo make buxybo-menuconfig
   No, sudo It will report an error and cannot be opened
2. add to depmod function
   
   
   
   Click on y key Add functionality
   

Then keep clicking esc Just quit

Click on enter Save configuration

3. Execute the command to recompile busybox
   sudo make busybox

4. Execute the command to recompile buildroot
   sudo make

5. output/image/rootfs.tar Just take depmod The root file system of the function