( erledigt ) DDclient lässt sich nicht installieren

ubuntu@ubuntu:~$ sudo apt-get update
Hit:1 http://ports.ubuntu.com/ubuntu-ports eoan InRelease
Get:2 http://ports.ubuntu.com/ubuntu-ports eoan-updates InRelease [97.5 kB]
Get:3 http://ports.ubuntu.com/ubuntu-ports eoan-backports InRelease [88.8 kB]
Get:4 http://ports.ubuntu.com/ubuntu-ports eoan-security InRelease [97.5 kB]
Get:5 http://ports.ubuntu.com/ubuntu-ports eoan-updates/main arm64 Packages [226 kB]
Fetched 510 kB in 2s (252 kB/s)
Reading package lists... Done
ubuntu@ubuntu:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  linux-headers-raspi2 linux-image-raspi2 linux-raspi2
The following packages will be upgraded:
  apport bsdutils cloud-init distro-info-data dmidecode fdisk fwupd fwupd-signed git git-man kmod landscape-common libapache2-mod-php7.3 libaprutil1
  libaprutil1-dbd-sqlite3 libaprutil1-ldap libarchive13 libblkid-dev libblkid1 libc-bin libc-dev-bin libc6 libc6-dev libcom-err2 libfdisk1 libfwupd2 libglib2.0-0
  libglib2.0-bin libglib2.0-data libglib2.0-dev libglib2.0-dev-bin libgnutls30 libicu63 libjson-glib-1.0-0 libjson-glib-1.0-common libkmod2 libldap-2.4-2
  libldap-common libmount-dev libmount1 libnss-systemd libpam-modules libpam-modules-bin libpam-runtime libpam-systemd libpam0g libpython3.7 libpython3.7-minimal
  libpython3.7-stdlib libsasl2-2 libsasl2-modules libsasl2-modules-db libsgutils2-2 libsmartcols1 libsqlite3-0 libss2 libssh-4 libsystemd0 libudev1 libuuid1 libxml2
  linux-base linux-firmware linux-libc-dev locales logsave mdadm mount php7.3 php7.3-cgi php7.3-cli php7.3-common php7.3-curl php7.3-json php7.3-mbstring
  php7.3-opcache php7.3-readline php7.3-sqlite3 php7.3-xml python-apt-common python3-apport python3-apt python3-keyring python3-problem-report python3-twisted
  python3-twisted-bin python3.7 python3.7-minimal sg3-utils sg3-utils-udev snapd sosreport sqlite3 sudo systemd systemd-sysv udev unattended-upgrades util-linux
  uuid-dev uuid-runtime vim vim-common vim-runtime vim-tiny xxd
106 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Need to get 162 MB of archives.
After this operation, 1741 kB of additional disk space will be used.
E: You don't have enough free space in /var/cache/apt/archives/.

ubuntu@ubuntu:~$ sudo df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            460M     0  460M   0% /dev
tmpfs            96M   14M   83M  14% /run
/dev/mmcblk0p2   15G  3.1G   11G  23% /
tmpfs           479M     0  479M   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           479M     0  479M   0% /sys/fs/cgroup
tmpfs            70M   70M     0 100% /var/log
tmpfs           150M     0  150M   0% /var/cache/apt/archives
/dev/loop0       49M   49M     0 100% /snap/core18/1753
/dev/loop1       84M   84M     0 100% /snap/core/8937
tmpfs           100M   16K  100M   1% /tmp
/dev/loop3       62M   62M     0 100% /snap/lxd/14894
/dev/loop2       62M   62M     0 100% /snap/lxd/14958
/dev/loop4       49M   49M     0 100% /snap/core18/1708
/dev/loop5       84M   84M     0 100% /snap/core/9068
/dev/mmcblk0p1  253M  126M  127M  50% /boot/firmware
tmpfs            96M     0   96M   0% /run/user/1000

ubuntu@ubuntu:~$ sudo nano /etc/fstab
  GNU nano 4.3                                                                   /etc/fstab
LABEL=writable  /        ext4   defaults        0 0
LABEL=system-boot       /boot/firmware  vfat    defaults        0       1
tmpfs           /tmp                     tmpfs    size=100M         0       0
#tmpfs           /var/tmp                 tmpfs    size=20M          0       0
tmpfs           /var/log                 tmpfs    size=70M          0       0
tmpfs           /var/cache/apt/archives  tmpfs    size=150M         0       0