Bridge interface not enable on Ubuntu 18

I 'm trying to add bridge interface to my ubuntu 18 image installed on banana pi w2 , but I receive error “add bridge failed: Invalid argument”, any one can help me why ?banana pi linux’s kernel image is root@bananapi:~# uname -a Linux simorgh 4.9.119-BPI-W2-Kernel #1 SMP PREEMPT Fri Sep 14 17:32:19 CST 2018 aarch64 aarch64 aarch64 GNU/Linux

root@bananapi:~# brctl addbr br0 add bridge failed: Invalid argument