ERROR: Failed binding SOCKET to Port 55413

1. [root@pom proc]# rpm --query centos-release
centos-release-7-3.1611.el7.centos.x86_64

2. urbackupsrv run -v debug

2017-03-10 15:17:30: ERROR: Failed binding SOCKET to Port 55413
2017-03-10 15:17:30: ERROR: Error while starting listening to ports. Stopping server.

3. netstat --listen --tcp
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN

4. yum info urbackup-server
Name : urbackup-server
Arch : x86_64
Version : 2.1.19.1765