Viber shuts down periodically running from Flatpak

```
flatpak run com.viber.Viber
sh: line 1: xdg-mime: command not found
qml: DPR: updating dpr 1
qml: CALL_WEB_VIEW_DEBUG: callWebEngineLoader active: false
qml: ADS: type 0 0
qml: Current screen: HDMI-0 [w=2560, h=1440, daw=4480, dah=1440, dpr=1]
qml: incomingCallWindow active: false
qml: notificationsWindow active: false
qml: DPR: setting dpr 1
qml: Current screen: DP-0 [w=1920, h=1080, daw=4480, dah=1440, dpr=1]
qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB profile
qml: Geometry: mh=112, mw=738, h=112, w=738, sah=1080, saw=1920
qml: Position: x=591, y=918
qml: Current screen: HDMI-0 [w=2560, h=1440, daw=4480, dah=1440, dpr=1]
qml: Geometry: mh=112, mw=738, h=112, w=738, sah=1440, saw=2560
qml: Position: x=2831, y=1278
qrc:/Resources/QML/Feed/FeedView.qml:31:5: QML ListViewEx: Binding loop detected for property "bottomMargin"
```