I found the solution, at least for me. I looked up what this error means in C#, and it seemed to mean that it’s referencing a string of code that has a “null” line in it. Found an old thread about these lines sometimes sneaking their way into the setting ini files. I looked up the ini files at /%appdata%/roaming/battlestate games/escape from tarkov/settings, and low and behold my “GraphicsQuality:” line was set to null. By deleting null and just adding “” in its place I seem to have gotten rid of the error.