hello i have 1600 tb want make hosting but i get that errors while i announce the host

[srvsk]

A critical error loading Sia has occured: Siad unexpectedly exited. Error log: Sia Daemon v1.3.2
Git Revision 72938f5
Loading...
(0/6) Loading siad...
(1/6) Loading gateway...
listen tcp :9981: bind: Only one usage of each socket address (protocol/network address/port) is normally permitted.