[SOLVED] style sheet drop down menu empty...

[hinckel]

OS: openSUSE Leap 15.1 (KDE//usr/share/xsessions/plasma5)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.19234 (Git)
Build type: Unknown
Branch: master
Hash: 7dd808ac6e3e48a60aefecba67b4d77d51abde83
Python version: 3.6.9
Qt version: 5.9.7
Coin version: 3.1.3
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)

Style sheet dropdown menu em Preferences is unpopulated. Only option is "No Style sheet".

[Solved] Thank you @pablogil!