" No such file or directory" when copying from local harddisk to icloud drive I am trying to copy some files via command line to the icloud drive

This is I have done:

cd '/Users/antkong/Library/Mobile Documents/com~apple~CloudDocs'
cp -r ~/Download .


Then I got a lot of 'No such file or directory' error messages. Here are some of them:

cp: ./Downloads/python-docs-samples-master/translate: No such file or directory
cp: /Users/antkong/Downloads/python-docs-samples-master/translate: unable to copy extended attributes to ./Downloads/python-docs-samples-master/translate: No such file or directory
cp: ./Downloads/python-docs-samples-master/translate/cloud-client: No such file or directory
cp: /Users/antkong/Downloads/python-docs-samples-master/translate/cloud-client: unable to copy extended attributes to ./Downloads/python-docs-samples-master/translate/cloud-client: No such file or directory
cp: ./Downloads/python-docs-samples-master/translate/cloud-client/quickstart.py: No such file or directory
cp: ./Downloads/python-docs-samples-master/translate/cloud-client/quickstart_test.py: No such file or directory


I have double-checked and I am certain the local files exist.

In console, I set the filter to 'icloud' and I see these logs:

default 12:07:57.409443 +1100   com.apple.iCloudHelper  MacOS error: -67050
default 12:08:02.507858 +1100   com.apple.iCloudHelper  MacOS error: -67050
default 12:08:07.757674 +1100   com.apple.iCloudHelper  MacOS error: -67050
default 12:08:12.858678 +1100   com.apple.iCloudHelper  MacOS error: -67050
default 12:08:18.105600 +1100   com.apple.iCloudHelper  MacOS error: -67050
default 12:08:23.300585 +1100   com.apple.iCloudHelper  MacOS error: -67050
default 12:08:28.403153 +1100   com.apple.iCloudHelper  MacOS error: -67050
default 12:08:33.548442 +1100   com.apple.iCloudHelper  MacOS error: -67050


Why the copying has failed?
The root cause of the issue is the lack of the disk space.

During my copy operation, my local HD has run out of spare space:

 df -h
Filesystem      Size   Used  Avail Capacity  iused      ifree %iused  Mounted on
/dev/disk1     233Gi  233Gi    0Bi   100%  5751980 4289215299    0%   /
devfs          191Ki  191Ki    0Bi   100%      661          0  100%   /dev
map -hosts       0Bi    0Bi    0Bi   100%        0          0  100%   /net
map auto_home    0Bi    0Bi    0Bi   100%        0          0  100%   /home
/dev/disk2s2   466Gi  420Gi   46Gi    91% 10491127 4284476152    0%   /Volumes/Time Machine


After I removed some apps from /Application and rerun the cp command, it works as expected.