I tried launching a modpack from curseforge. When I press play in curseforge it takes me to the Minecraft launcher as normal, but when I press play in the Minecraft launcher it will start loading and at the bottom of the launcher it says finalizing. Then the launcher goes away like its about to load, but the Minecraft launcher reappears and says: Error Unexpected issue occurred and the game has crashed." I have tried giving it 5G of ram and uninstalling curseforge but nothing works. This isn't the first modpack to do this, I have about 4 others that do the same thing. Pls anyone who reads this pls help thanks. If you want to look at the crash log go here: https://pastebin.com/sBQZSyMg
If you look closely, "[15:15:26] [main/FATAL]" Then continues with an error: "Unable to launch" then suggests that "Patcher expecting non-empty class data file for net.minecraft.crash.CrashReport$1, but received empty, your vanilla jar may be corrupt." I recommend reinstalling both minecraft and curseforge, this is a common error for repetitive installation of corrupted mods/modpacks. (If possible) check for said folder's integrity. (It's the crash report file for creating crashes due to the excessive amount of errors that occurred, around 22.) If the prior does not work, try lighter packs like fabric packs, etc. Or if you are modifying packs, check for compatibility issues on the mod sites. 5GB's of ram is enough for around 300 Medium mods- that being said, quite generous. I wouldn't say I was a professional either. Please contact the Modpack creators for any questions/concerns or leave a comment in the "Issues" section, I'm sure they'll get to you. That's all I can say, have a good 2021!
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