I am running Linux Mint 19.1.

Whilst downloading a 3D editing software I believe someone's coding instructions have caused an issue with my system. I am currently trying to download gThumb from Software Manager, but I am met with an error message:

The package system is broken

Check if you are using third party repositories. If so disable them, since they are a common source of problems. Furthermore run the following command in a Terminal: apt-get install -f

The following packages have unmet dependencies:

wine-stable: Depends: wine-stable-amd64 (= 4.0~bionic) but 4.0~bionic is installed Depends: wine-stable-i386 (= 4.0~bionic) but it is not installed

I have tried the suggested command and I am met with:

alex@alex-Lenovo-Y50-70-Touch:~$ apt-get install -f
E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?
alex@alex-Lenovo-Y50-70-Touch:~$ sudo apt-get install -f
[sudo] password for alex:           
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  icoutils libcapi20-3 libodbc1 libwxgtk3.0-gtk3-0v5 python-wxgtk3.0
  python-wxversion wine-stable-amd64
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  playonlinux wine-stable winehq-stable
0 upgraded, 0 newly installed, 3 to remove and 421 not upgraded.
After this operation, 9,415 kB disk space will be freed.
Do you want to continue? [Y/n] y
dpkg: error: configuration error: /etc/dpkg/dpkg.cfg.d/architectures:1: unknown option 'foreign-architecture'
E: Sub-process dpkg --set-selections returned an error code (2)
E: Couldn't record the approved state changes as dpkg selection states

I have read several similar posts about this issue but haven't found any exactly the same, or with an actual solution. Please help.

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