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Hey if anyone know why my command block are not working that would be good
my command block then is switch on but you i do /give TheBlueMoon_Wolf command_block it says this Error: Unknown item name: command_block. and i have tried many different ways i am using spigot 1.12.2 and i can't find out why it is not working 
maybe it is a bug in essentials
you use essentials or essentialsX?
maybe it is a bug in essentials
probably
please use /minecraft:give TheBlueMoon_Wolf command_block
no essentialsX is not the problem it must be the server thing if you want i can give you acces and see whats wrong if you want SMASHERYT
What makes you say that?
As soon as you install essentialsX it overwrites the vanilla /give command. However you can still access the vanilla give command using /minecraft:give.
Please also check if you have any plugins which might overwrite the /give command.
