https://imgur.com/a/sbjQhCe

Atm my issue, as im trying to use this with Krastorio Spaced out <-

I'm not seeing this issue when I download Krastorio Spaced out. Could you see if it appears when removing just that mod?

On first glance, it looks like someone did something very naughty when defining the prerequisites for some technology.

Well if i share my list you will probably go.
Ah...

but 1 sec i will share
https://imgur.com/a/YobpxUQ here an image
and here's the mod-list.json

https://we.tl/t-XnA3Y78Wgl
(wetransfer)

Sorry for the long list.
trying to make a pack again for private.

Sorry but this is far too big of a list for me to reasonably test to identify the issue. Could you try loading the game with half of them turned off, see if it loads, turn off half of those, etc.... to narrow down which one is the problem? That would help more than sending me a large modpack to sift through. Reloading your save file should let you easily reload your modpacks.

Haha alright, sorry !
Thought you might have an answer from the get go
but will try to narrow it down by turning them one by one off

i know what the mod is .

https://mods.factorio.com/mod/planet-tapatrion

This mod with yours.
do not mix.

That's funny because my first mod concept was based on another RJDunlap planet lol. With your help, I found it very quickly. He assigned a string as a prerequisite to his heat-inserter technology. That is a big mistake that someone else reported to him back in March, and still unresolved. I reported it again to him anyway. This can mess with other mods (not just my own) that look at tech trees.

Anyway, I have some bad news for you:
1) I put in a special case, just for this. My code no longer causes the game to fail to load when Tapatrion is present.
2) Even without my mod, Tapatrion will not work as of Factorio 2.0.44 (https://mods.factorio.com/mod/planet-tapatrion/discussion/67f4311e66e20d2fd4cf5a16). I am getting the same error as in that thread, where there are issues with his decoratives.
3) RJDunlap (the author of Tapatrion) has not been seen in 3 months.

So... I fixed what I can fix from my side, and will push out an update later today, but unfortunately, it won't work out for you because the remaining issues are on Tapatrion's side.

EDIT: The fix is released.

Thank you anyway <3

Grateful ^^