I can not transplant SDK15.2's ble_nus into my project

[Winter]

I can not transplant SDK15.2's ble_nus into my project, there is no errors after i complie it, but when it  does not work, I use RTT to see the errors, like this:

line 1133 is here, i really don't know how to solve it,thanks very much.

[Winter]

when I debug it，it fails at here:

[Winter]

Now, I have solved it, but the services_init()  should be done before advertising_init()，then it works, WHY？？？？？？？？？？？？？？？？？？？？？？？？

[Winter]

Hi, Nordic team , Could you help me answer this?