It looks like you accidentally reopened Citra before uploading the log. The log gets cleared every time you open Citra. Have the log folder open in the background first before closing Citra then immediately upload a new log.
Client Version Nightly 1621 HEAD-df9e230
Operating System Windows 10 (10.0)
CPU Intel(R) Core(TM) i3-3227U CPU @ 1.90GHz
Graphics API OpenGL 3.3.0
Graphics Renderer Intel(R) HD Graphics 4000
GPU Driver Version 10.18.10.5129
CPU JIT [x]
Hardware Renderer [x]
Hardware Shader [x]
Hardware Shader, Accurate Multiplication [x]
Shader JIT [x]
System Region 2
Shader Disk Cache [ ]
Here’s some issues I found with your log that might help.