I installed texlive on ubuntu 20.04 with:

```
sudo apt -y install texlive-latex-extra texlive-extra-utils texlive-font-utils

```

when trying to install a latex package (any) i got:

```
/usr/bin/tlmgr: unexpected return value from verify_checksum: -5

```

any ideas?

EDIT: Hello, i install packages with `tlmgr install package_name`. tlmgr installs when installing latex...
Output of `dpkg -S $(which tlmgr)`

```
texlive-base: /usr/bin/tlmgr

```

Output of `apt-cache policy texlive-base`:

```
texlive-base:
  Installed: 2019.20200218-1
  Candidate: 2019.20200218-1
  Version table:
 *** 2019.20200218-1 500
        500 http://cl.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        500 http://cl.archive.ubuntu.com/ubuntu focal/universe i386 Packages
        100 /var/lib/dpkg/status

```

Output of `tlmgr --version`:

```
tlmgr revision 53568 (2020-01-27 19:20:16 +0100)
tlmgr using installation: /usr/share/texlive
TeX Live (http://tug.org/texlive) version 2019

```