Debug but no print information in Console

[oyhp052]

Hi all, when I debug program on L2 (AVB), the Console offten doesn't show print information .
In addtion, the XDE version is 11.11.1 and I have select the "Run/Debug configurations.../Run UART server ". Can anynoe tell me why and how to solve this problem ?

Thanks !

[oyhp052]

This problem arises in the latest AVB design reference (app_1722_1_demo and app_xr_avb_lc_demo of the latest design reference) , and whether who met this problems or not ?

Thanks !