Additional fonts required

When I start LibreOffice, Gnome shows a notification that says:

"Additional fonts required. An application is requesting additional fonts."

I tried all methods to refresh the cache of the fonts directory also deleted the fonts cache directory and refresh it again but not solved. Actually, this makes only a problem in the user interface where the number of pages counts and words counts don't appear in the Writer status bar. so I can't see the words count until I click on its place in the status bar to show me the word count window. I was using LibreOffice 6.3 with the same problem so I decide to upgrade to 7.2 but the problem is still there. I'm using Ubuntu 18.04 with Gnome.

when I try to reinstall Ubuntu-Desktop I get errors:

sudo apt-get install --reinstall ubuntu-desktop
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 0 B/3,592 B of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 243145 files and directories currently installed.)
Preparing to unpack .../ubuntu-desktop_1.417.5_amd64.deb ...
Unpacking ubuntu-desktop (1.417.5) over (1.417.5) ...
Setting up ubuntu-advantage-tools (27.2.2~18.04.1) ...
Traceback (most recent call last):
  File "<string>", line 2, in <module>
ModuleNotFoundError: No module named 'uaclient'
dpkg: error processing package ubuntu-advantage-tools (--configure):
 installed ubuntu-advantage-tools package post-installation script subprocess returned error exit status 1
Setting up ubuntu-desktop (1.417.5) ...
Errors were encountered while processing:
 ubuntu-advantage-tools
E: Sub-process /usr/bin/dpkg returned an error code (1)