Chose MME '(null)'

[ayoub-tl]

Hello , i am trying to connect a lte-uesoftmodem with a lte-softmodem and magma-mme , but i am having some problems, the ue attach is rejected with a network faileur and the enb show MME null , the MNC config and the ip address are both correct , i cant find why the enb is throwing this errer
can someone help me why this erreur is happening ?

Thanks