I need help with hackintosh Mojave using final cut pro x

My first build of hackintosh Mojave. Everything works perfectly even final cut pro x, but 1 issue: cant export/share h.264 (mov) or mp4 gives error after few seconds. INTERNATIONAL GRAPHIC CARD ENABLED

Specs:

Intel 9900k Gigabyte Auros Xtreme GSkills 32gb 3200 mhz Samsuung 860 EVO 2TB SSD GRAPHIC CARD: MSI RX VEGA 64