After Effects 23.01 Error 78 :: 4 {SetOutputWorld Called with a world of the wrong size}

Possible. AI is just as bad as AE with lots of bugs and issue and a single object on the page can cause all sorts of trouble like the new 3D stuff and a few other things. You will need to go back and check these things. In case of doubt expand the appearance. anything more specific will apparently require you to provide screenshots and all that.

Mylenium

I suspect you run into issues with the combination of effects since they either expand the buffers too large or convert the color space. It's not a single one of them, just the combination. I'd toggle them off selectively and see if it makesxa difference. I'd also look into whether the Fill effect can be substituted for a color overlay layer style or a Hue/ Saturation effect in Colorize mode. It's those little things. Of course also make sure that your Repetile and blur don't generate excessively large layers, especially between otherwise harmless keyframes. An untweaked interpolation and the resulting "lasso" effect overcranking  values can be disastrous.

Mylenium 

Hey, sorry for giving No information, I honestly didnt expect to get an anwser.

Im not using any third party plugins in this project, but I am using Cc Repetile, gaussian blur, fill and tritone alot. I have loads of .ai files in my project, which all have a tritone or fill effect on them and that is connected to a single color controll effect, so I can easily change the dominant color and dont need to go into every single .ai file. The comp is Full HD and I tried exporting in ProRes and h.264.

Without any exact info about your system, your project and its contents, render settings and all that we can't realyl tell you anything. You need to be much more specific. The error in question is typically an effects error where a wrongly sized buffer is produced, so if you are using third-party plug-ins, this would be the first thing to check and updating them to the latest compatible version would be advised. Anyrthing more will require much more info.

Mylenium