I've been getting this error every time I try to log into a character today. I wasn't having the problem yesterday, and I haven't updated my game or drivers since then. I'm also not having this problem with any other game on my system. How do I fix this?

My specs:

Processor: Intel i3-2120 CPU @ 3.30 GHz
RAM: 16 GB
Graphics card: Nvidia GEForce 1050 GTX
DirectX version: 11