What happened in Fatal Error

I'm Playing normally until this happened. Anyone knows why?

commandline: "E:\SteamLibrary\steamapps\common\Apex Legends\r5apex_dx12.exe" -steam -game R2

title: Fatal Error - Engine Error

error: [DXGI_ERROR_DEVICE_REMOVED] : 0x887A0006 - DXGI_ERROR_DEVICE_HUNG The application's device failed due to badly formed commands sent by the application. This is an design-time issue that should be investigated and fixed.