Whenever I try to load Minecraft on 20w27a, after 1-3 minutes, the game quits and the launcher gives me an error. I must say that I don't use the launcher from Minecraft's website, I use a launcher called TL 1.114.4  [for Mc-launcher.com]and the error log it gives me is so long that I can't fit it all here or else I can't post the report because its more than 20,000 characters, but I can provide you with Minecraft's crash report.