In the yellow generator you need to find a fuel can near a barrel, I think on the other side of the table. As for the VRAM being exhausted, it's very likely that your GPU has low video memory, but you can easily fix it by lowering the graphics, otherwise you might see blurry textures, it should be a message from the game engine. Hope this helps!
Yes the fuel cans dont let you pick them up , and it wasn't my gpu, the red text is debugging in unreal engine, I've played games that need a 3080 and stuff, the game played absolutely fine on the highest settings, Yes nothing was blurry or anything , the game was at the highest settings and when the text was showing It wasn't affecting the gameplay at all, it was telling me debugging information, it only shows on certain items in the basement. And it shows when the game is running perfect.