catserver打不开多线程和稳定都用过了


Cannot redefine singleton Server

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from FastWorkbench (fastbench)

直接删除 FastWorkbench-1.12.2-1.7.2.jar   

牛逼啊。大佬。！！！！感谢