why can't we put objects directly into the cargo bays instead of having to transport them to the space platform core?

Hello, The error has occurred again, it occurs when a player joins the game. The server is called "bac à sable 2.0" and it is currently online.
Here's the problem:

Le scénario level a engendré une erreur non récupérable.
Merci d'informer l'auteur de cette erreur.

Error while running event level ...

Is it normal that when an unbuilt "cargo landing pad"(for rockets) is positioned next to a built one, some of the texture is missing? (the side that is stuck to the other)
ici on voit le problème:
https://ibb.co/4sYLC31
comparaison sans le problème:
https://ibb.co/wzbRQPJ

I don't know how to provide a backup file or how to reproduce the bug but here are some photos:
first, there was a red cross like this (there is one because the mouse pointer is out of rail scope but when there was the bug, even when it was in rail scope it displayed a red cross.)
https://ibb.co ...

-an overhead conveyor:
he's a conveyor on a bridge

-a plane:
it is a plane that can be programmed to go to mini-airports on land or flying over very long distances in order to find very rare materials thousands of kilometers away and where a small factory can be set up

-container ships:
these are ...

that's it, I connected a rail from "remote view" and it works again but the problem remains to be corrected

hello, I was playing factorio and a player wanted to join the game but the game told me "unrecoverable error" I don't remember very well but from what I understood (I'm in multiplayer mode)

hello, I was playing factorio, I wanted to continue a "historical" rail so that the train arrives at its destination except that when I want to make a rail that turns there is a cross, yet there is nothing in the passage. I managed to make rails that turn an hour ago. (I'm in multiplayer mode)
(30 ...

Hello, this has been happening since the 2.0 update arrived, I can't find the game scenario "sandbox" when I create a new map in single or multiplayer mode. Is this normal?