If anyone could help me, I'd really appreciate it. The launcher keeps saying Java ran out of memory, but I have 8GB of RAM installed
You may have 8GB of ram installed, but you haven't assigned more ram through Twitch to the modpack. By default this is set to 2GB I believe. The way to change this is by following these steps:
1. In the top right corner of the Twitch Launcher click the dropdown menu by your username.
2. Press "Settings" at the bottom
3. Go to the tab "Minecraft"
4. Scroll all the way down
5. In Java Settings change the "Maximum Memory Allocation" to 4GB or higher
6. Click done and restart the game!
Proud creator of Ultimate Compression: https://minecraft.curseforge.com/projects/ultimate-compression?gameCategorySlug=mc-mods&projectID=304462