On Modrinth, the PizzaCraft version for Forge 1.20.4 is mislabeled as compatible for Forge 1.20.1. Because of this, profiles running Forge 1.20.1 download the wrong version which then leads to an error on attempted launch because the Java language version is for a newer version of Minecraft. It also does not show up for searches for mods for Forge 1.20.4 because of this as well.