https://docs.01.org/clearlinux/latest/guides/maintenance/increase-virtual-disk-size.html
If you follow these instructions, you will find at the step 5c that Parted 3.0 has removed the command “resize”. Maybe another tool can be used or the guide should be updated to the method advised here for parted:
https://wiki.archlinux.org/index.php/Parted#Resizing_partitions
Resizepart seems to be the new method since 3.0.
Thanks!