java.lang.NullPointerException: Initializing game - Support & Bug Reports - Forge Forums
Connection Lost Internal Exception: io-netty-handler.codec-DecoderException: java.lang-NullPointerException: Cannot invoke "net.minecraft.client.multiplayer.ClientPacketListener.m_6198_()" because the return value of "net.minecraft.client.MinecraFt ...
java.lang.NullPointerException: Exception in server tick loop · Issue #9 · TerminatorNL/LagGoggles · GitHub
1.14.4] Unable to join a dedicated server with this mod enabled- NPE · Issue #9 · BlakeBr0/IronJetpacks · GitHub