Hello!
Everytime I go on "Save World & Quit" Minecraft will show me the "Saving World" screen, and there it stays. I tried waiting about ~20 minutes, before I closed Minecraft via Task manager. (Nothing else worked).
All the Launcher shows me afterwards is the "Error - Game crash - An unexpected issue occurred and the game has crashed. We'e sorry for the inconvenience." So I don't have a crash report, but maybe the log file helps?
I think it's an issue with Forge, because, if I play completely vanilla, it works perfectly fine, and I tried it with only Forge and no other Mods in and I get stuck.
(Also made a new world were I hadn't used any mods in prior.)
I used the "Recommended 1.15.2 - 13.1.0" Installer.
I play Minecraft 1.15.2 on Windows 10
2020-02-07-8.log
debug-1.log