Map wont load, getting weird error (FIXED)

[sitood]

qhull precision error: Only 4 facets remain.  Can not merge another
pair.  The convexity constraints may be too strong.  Reduce the
magnitude of 'Cn' or increase the magnitude of 'An'.  For example,
try 'C-0.001' instead of 'C-0.1' or 'A-0.999' instead of 'A-0.9'.

What does it even mean? i can't find anything about it on the internet. 

[Oatmeal]

So the map compiled without errors but this showed up when you started the map in-game?

[sitood]

So the map compiled without errors but this showed up when you started the map in-game?

Actually, the map works fine on my pc, but i get this error after its loaded. i can still play it after that.
But when some of my friends wanted to play it, tf2 crashed immediately after loading the map.
I have the feeling this error causes the crash because the map loaded fine before that error came up.

[Oatmeal]

I honestly don't have a clue what causes that but I would love to take a look at your map if you give me the vmf.

[sitood]

I honestly don't have a clue what causes that but I would love to take a look at your map if you give me the vmf.

Alright, ill add you tomorrow when im back at my pc.

[John]

have you tried recompiling your map in case there was an error during compilation that wasn't caught
alt+p for problems maybe?

is your map packed? if so what did you use to pack it? some packers cause crash issues

[sitood]

have you tried recompiling your map in case there was an error during compilation that wasn't caught
alt+p for problems maybe?

is your map packed? if so what did you use to pack it? some packers cause crash issues

"no errors found"
Also, the map even crashes when i dont pack the textures. I don't think its related to the textures. Im using pakrat.

[Torii]

Compile log and/or .vmf?

[sitood]

Compile log and/or .vmf?

The compile log is just like it was before, the wierd error itself doesn't even show up in the log.
Ill add you aswell to give the vmf.

[Oatmeal]

Sitood sent me his map and I managed to find the cause of the error.

tl;dr It was a displacement creating somehow weird geometry and deleting the displacement fixed the error.

If you get comparable errors in the future and you don't know how to find the cause: I just used the cordon tool, put it around the spawn room and compiled the map with the lowest compiling settings (Normal BSP, fast VIS, no RAD. Takes like 1 second). The error didn't show up so I increased the range of the cordon box rather generously and compiled again. I did that like 3 times until the error started showing up. Then I decreased the range again by smaller steps until the error disappeared. It's rather easy to guess which room had the faulty geometry by that way. I just removed the only parts that were complex geometry in that area, which were the displacement walls and that fixed it.