2-Factor Authentication App doesn't show QR code (Solution)

I’m posting in the hope that someone with a similar issue reads this and finds it useful:

After installing the TOTP Second-factor Auth App from the ownCloud Market, and ticking the box at Security > Activate TOTP, nothing happens - no QR code or anything shows up.

The app requires the imagick extension to work. Without it, you can’t see the QR code you are supposed to scan.

To install imagick on Ubuntu / Debian / Raspberry Pi OS:
Follow the instructions at linux capable or copy/paste (at your own risk):

sudo apt install php-imagick

Verify installation:
php -m | grep imagick

Expected output:

Have a nice day! :grinning:

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