Cannot enter my server due to an error lost connection: Internal Exception: io.netty.handler.codec.EncoderException: java.lang.IllegalStateException: Modders must implement Ingredient.getSerializer in their custom Ingredients: com.gregtechceu.gtceu.api.recipe.ingredient.FluidContainerIngredient@a57e7d1

[ujifffy]

ujify lost connection: Internal Exception: io.netty.handler.codec.EncoderException: java.lang.IllegalStateException: Modders must implement Ingredient.getSerializer in their custom Ingredients: com.gregtechceu.gtceu.api.recipe.ingredient.FluidContainerIngredient@a57e7d1

[madman404]

Having the same issue myself as of the server's last restart:
lost connection: Internal Exception: io.netty.handler.codec.EncoderException: java.lang.IllegalStateException: Modders must implement Ingredient.getSerializer in their custom Ingredients: com.gregtechceu.gtceu.api.recipe.ingredient.FluidContainerIngredient@5c69cac4

[ursamina]

@ both - i just pushed an update to cf with the gt modern hotfix. could you both confirm if this still occurs (it shouldn't anymore!)?