Screenshot not working on linux?

So, when taking a screenshot on etterna (version 66.1) i get an error in the terminal of:

WARNING: etterna-0.66.1/src/RageUtil/File/RageFileDriverDirectHelpers.cpp:199: File ‘/2019-12-18_132058.png’ is gone! (No such file or directory)

Etterna is installed to /opt/etterna with root as the owner. running from my normal user account and with sudo both yield the same error. Does anyone have any advice on how to proceed? Screenshotting worked fine with version 65