Just did a fresh install of ElementaryOS Hera (5.1.2) and after updating, upgrading and installing some apps, also installing elementary-tweaks. I get this error (screenshot attached) and after removing all the custom added PPAs, cleaning the sources.list file and all, still can't fix the error, any help?

Additional information, i can search, find apps and see updates but i can't install any updates or new apps. I can install everything through the terminal but nothing from the AppCenter.

enter image description here

1 Answer 1


What worked for me:

sudo apt update

sudo apt upgrade



Reload AppCenter

  • Seems all i needed was a reboot/relog. Might leave this post up in case anyone else faces this. Thanks bud. Commented Feb 21, 2020 at 3:32

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