Question: I need icons which is near the name of program in left-top corner (for nautilus and text editor). And icons for text file and catalog in nautilus. It is for my site.

Answer: 
The pipes in `/etc/skel/.zoom/data/` break `adduser`. According to the error message, the directory `/etc/skel` is supposed to contain directories, files or links only, not other file system objects.

Apparently the directory `.zoom` contains more than configuration files only. To prepare a configuration for `zoom` for new users, you have to find out what files contain configuration that can be used for every user and remove all other files or objects. (I don't know if there is any useful configuration data for `zoom` that could be put into `/etc/skel`.)

If in doubt, recursively remove `/etc/skel/.zoom` to make `adduser` working again.
You can try creating the user with no group like below:

```
sudo adduser <username> --system

```

The user will be created belonging to the group `nobody`.
Then, if you would like to add the user you created to a group, you can do:

```
sudo usermod -a -G <groupname_to_be_added_to> <username_you_created above>

```

Hope it helps you too :)