Run df -h to verify your root partition is full (100%)
Run lsblk and then lsblk -f to get block device details
sudo mount -o size=10M,rw,nodev,nosuid -t tmpfs tmpfs /tmp
sudo growpart /dev/DEVICE_ID PARTITION_NUMBER
lsblk to verify partition has expanded
sudo resize2fs /dev/DEVICE_IDPARTITION_NUMBER
Run df -h to verify your resized disk
sudo umount /tmp