"found no video or audio data in input" for everything -- Debian

[lessbones]

In this case I haven't even been trying to launch it through a VNC, just from the command line, even without X11 forwarding (usually that looks like this with the binary from the downloads section:  

qt.qpa.screen: QXcbConnection: Could not connect to display
Could not connect to any X display.)

with QT_DEBUG_PLUGINS=1 I'm getting:

Detected '/home/cody/Downloads/hybrid/misc.ini',...
QFactoryLoader::QFactoryLoader() checking directory path "/home/cody/Downloads/hybrid/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/home/cody/Downloads/hybrid/plugins/platforms/libqxcb.so"
Found metadata in lib /home/cody/Downloads/hybrid/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 329989
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/home/cody/Downloads/hybrid/platforms" ...
Cannot load library /home/cody/Downloads/hybrid/plugins/platforms/libqxcb.so: (/home/cody/Downloads/hybrid/plugins/platforms/../../lib/libQt5XcbQpa.so.5: undefined symbol: _ZN11QFontEngine14bitmapForGlyphEj6QFixedRK10QTransform, version Qt_5_PRIVATE_API)
QLibraryPrivate::loadPlugin failed on "/home/cody/Downloads/hybrid/plugins/platforms/libqxcb.so" : "Cannot load library /home/cody/Downloads/hybrid/plugins/platforms/libqxcb.so: (/home/cody/Downloads/hybrid/plugins/platforms/../../lib/libQt5XcbQpa.so.5: undefined symbol: _ZN11QFontEngine14bitmapForGlyphEj6QFixedRK10QTransform, version Qt_5_PRIVATE_API)"
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Before it ever tries to connect to the X display...

I think this has something to do with a Qt version problem