Unable to fix broken/missing dependencies

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following package was automatically installed and is no longer required:
  pepperflashplugin-nonfree
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
  add-apt-key libqt5designer5 libqt5help5 python3-bs4 python3-html5lib
  python3-lxml python3-pyqt5 python3-pyqt5.qtsvg python3-webencodings
Suggested packages:
  python3-genshi python3-lxml-dbg python-lxml-doc python3-pyqt5-dbg
The following NEW packages will be installed
  add-apt-key libqt5designer5 libqt5help5 python3-bs4 python3-html5lib
  python3-lxml python3-pyqt5 python3-pyqt5.qtsvg python3-webencodings
0 to upgrade, 9 to newly install, 0 to remove and 150 not to upgrade.
1 not fully installed or removed.
Need to get 6,451 kB of archives.
After this operation, 27.3 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://gb.archive.ubuntu.com/ubuntu bionic/universe amd64 add-apt-key all 1.0-0.5 [5,314 B]
Get:2 http://gb.archive.ubuntu.com/ubuntu bionic/universe amd64 libqt5designer5 amd64 5.9.5-0ubuntu1 [2,761 kB]
Get:3 http://gb.archive.ubuntu.com/ubuntu bionic/universe amd64 libqt5help5 amd64 5.9.5-0ubuntu1 [133 kB]
Get:4 http://gb.archive.ubuntu.com/ubuntu bionic/universe amd64 python3-pyqt5 amd64 5.10.1+dfsg-1ubuntu2 [2,268 kB]
Get:5 http://gb.archive.ubuntu.com/ubuntu bionic/main amd64 python3-bs4 all 4.6.0-1 [67.8 kB]
Get:6 http://gb.archive.ubuntu.com/ubuntu bionic/universe amd64 python3-pyqt5.qtsvg amd64 5.10.1+dfsg-1ubuntu2 [26.8 kB]
Get:7 http://gb.archive.ubuntu.com/ubuntu bionic/main amd64 python3-webencodings all 0.5-2 [10.4 kB]
Get:8 http://gb.archive.ubuntu.com/ubuntu bionic/main amd64 python3-html5lib all 0.999999999-1 [81.9 kB]
Get:9 http://gb.archive.ubuntu.com/ubuntu bionic-updates/main amd64 python3-lxml amd64 4.2.1-1ubuntu0.4 [1,097 kB]
Fetched 6,451 kB in 2min 18s (46.8 kB/s)                                       
readlink: missing operand
Try 'readlink --help' for more information.
stat: missing operand
Try 'stat --help' for more information.
E: Problem executing scripts DPkg::Pre-Invoke 'stat -c %Z $(readlink -f $(which opera)) > /tmp/opera.timestamp'