Hi, I'm on Arch Linux with Plasma 5.7.1 and Qt 5.7.0. Enpass uses kde-open5 to open a browser, which fails:
kde-open5: /home/jan/Enpass/libs/libQt5Core.so.5: version `Qt_5.7' not found (required by kde-open5)
kde-open5: /home/jan/Enpass/libs/libQt5Core.so.5: version `Qt_5.7' not found (required by /usr/lib/libKF5KIOWidgets.so.5)
kde-open5: /home/jan/Enpass/libs/libQt5Core.so.5: version `Qt_5.7' not found (required by /usr/lib/libKF5KIOCore.so.5)
kde-open5: /home/jan/Enpass/libs/libQt5Core.so.5: version `Qt_5.7' not found (required by /usr/lib/libKF5Service.so.5)
[...]
Possible fix: Reset environment vars when starting a QProcess(?).
Hack: Start Enpass and temporarily rename the libs/ dir, which makes kde-open5 use the system's libQt5Core.so