I can launch the launcher as usually,
I click on "Solo"
I create a new world, or I play in an already existing world on creative or survival (it does the same)
There is written "preparing spawn area",
It load to 95%, and then it takes me back to the launcher with an error message
Here is the crash report :
Environment
Minecraft Java Edition,
MacOS High Sierra (10.13.4)
Java 9.0.1
We are unable to diagnose your issue due to the lack of proper debug information. Please review the guidelines before reporting issues.
In case of a game crash, please also attach the crash log from
[minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/guides/finding-minecraft-data-folder/].-- I am a bot. This action was performed automagically!