Hi howgyang,
I am not with Laminar Research; just a flight simmer.
As Jennifer (jroberts) from Laminar Research, has advised you need to check the reference given for the system requirements. I have looked at your Log.txt file and I am of the opinion that your graphics "card" does not meet the system requirements and has very little memory. My understanding is it should have at least 4GB of VRAM
Do you have a dedicated graphics card or are you connected to your motherboard (MB)? If connected to the MB then you need to install a dedicated graphics card.
X-Plane 11 is very resource hungry relying on good GPU and CPU capacities.
In recent times, back through this forum, jroberts has provided a detailed response to another flight simmer having a similar problem with their graphics card while.trying to run X-Plane. You may chose to scroll back through some of the postings within the last couple of weeks (?).
Good luck.
Glenn