Is the error causing any problems? I get the same thing, but it doesn’t seem to be affecting anything.
The error looks like it comes from QT. It looks like the Zoom Client uses QT under the hood in Linux. But the Linux SDK is Headless, so it’s not going to render any QT elements. So it might be a harmless error related to the fact that the Linux SDK is not rendering any UI elements but some other piece of code expects a UI element and emits an error.