Flatpak Repo for KDEPIM Nightly Builds?

Fri Feb 1 12:11:42 GMT 2019

Hi Daniel, hi.

I currently like to test something (Akonadi EWS with Office 365) using a more 
recent KDEPIM version than 18.08.

I setup flatpak and I could install 18.08 from flatpak directly, however I'd 
like to have something newer and as 18.12 is not yet in official flatpak repo I 
tried to add the nightly stuff according to

https://community.kde.org/KDE_PIM/Flatpak

however I get:

LANG=C sudo flatpak remote-add --if-not-exists kdeapps-testing --from https://
distribute.kde.org/flatpak-apps-testing/kdeapps.flatpakrepo
Can't load uri https://distribute.kde.org/flatpak-apps-testing/
kdeapps.flatpakrepo: Key file contains line ?<!DOCTYPE HTML PUBLIC "-//IETF//DTD 
HTML 2.0//EN">? which is not a key-value pair, group, or comment

Any hints?

Thanks,
-- 
Martin