I don't know how to solve this problem, but it seems related to EGL.
WSEGL_InitialiseDisplay: DRI2OpenConnection failed
QEgl::display(): Cannot initialize EGL display: "Not initialized (0x3001)"
QEglContext::chooseConfig(): Could not find a suitable EGL configuration
Requested: "type=es2 rgba=0,0,0,0 surface-type=window"
Almost the same error i reported on repo with Enemy Territory.
Here is the code if someone could help:
https://github.com/WagicProject/wagic/blob/master/JGE/src/qt/corewrapper.cpp