SUMMARY in KDE neon kexi 3.2 can be installed from software centre but not in linux mint. In either system flatpak install fails. flatpak remote-add fails first time but apparently succeeds next time install always fails Terminal commands and responses: ray@ray-OptiPlex-780:~$ flatpak remote-add --if-not-exists kde http://distribute.kde.org/flatpak-apps-testing error: GPG signatures found, but none are in trusted keyring ray@ray-OptiPlex-780:~$ flatpak remote-add --if-not-exists kde http://distribute.kde.org/flatpak-apps-testing ray@ray-OptiPlex-780:~$ flatpak install kde org.kde.kexi-stable error: Unable to load summary from remote kde: GPG signatures found, but none are in trusted keyring ray@ray-OptiPlex-780:~$ flatpak install kde org.kde.kexi-stable error: Unable to load summary from remote kde: GPG signatures found, but none are in trusted keyring STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION Same problem on Linux mint.
I found how to install it on Fedora: You have to use this address http://distribute.kde.org/kdeapps.flatpakrepo instead of http://distribute.kde.org/flatpak-apps-testing. Flatpack requiered a ".flatpakrepo" file. This needs to be changed on the web page instructions.