How to run the fng2 mod?

[RUSTLE]

The fng2 mod download on (https://github.com/Jupeyy/teeworlds-fng2-mod),When i ran its .exe. It shows that：

[6602872e][engine]: running on windows-win64-amd64
[6602872e][engine]: arch is little endian
[6602872e][storage]: added path '$USERDIR' ('C:\Users\Administrator\AppData\Roaming/Teeworlds')
[6602872e][storage]: added path '$DATADIR' ('data')
[6602872e][storage]: added path '$CURRENTDIR' ('C:\Users\Administrator\AppData\Local\Temp\360zip$Temp\360$1\fng-0.6.5-win64')
[6602872e][console]: executing 'autoexec.cfg'
[6602872e][server]: added option 'Option: Normal gravity' 'tune gravity 0.50'
[6602872e][server]: added option 'Option: Moon gravity' 'tune gravity 0.25'
[6602872e][server]: added option 'Option: No gravity' 'tune gravity 0.00'
[6602872e][server]: added option 'map openfng5_beat' 'sv_map openfng5Beat'
[6602872e][server]: added option 'map AliveFNG(Golden Spikes)' 'sv_map AliveFNG'
[6602872e][server]: added option 'map IIT_Edited' 'sv_map IIT_Edited'
[6602872e][server]: added option 'Scorelimit 200' 'sv_scorelimit 200'
[6602872e][server]: added option 'Scorelimit 300' 'sv_scorelimit 300'
[6602872e][server]: added option 'Scorelimit 500' 'sv_scorelimit 500'
[6602872e][server]: added option 'Scorelimit 700' 'sv_scorelimit 700'
[6602872e][server]: added option 'Scorelimit 1000' 'sv_scorelimit 1000'
[6602872e][server]: added option 'Restart' 'restart 5'
[6602872e][server]: added option '1o1' 'sv_spectator_slots 14'
[6602872e][server]: added option '2o2' 'sv_spectator_slots 12'
[6602872e][server]: added option '3o3' 'sv_spectator_slots 10'
[6602872e][server]: added option '4o4' 'sv_spectator_slots 8'
[6602872e][server]: added option '5o5' 'sv_spectator_slots 6'
[6602872e][server]: added option '6o6' 'sv_spectator_slots 4'
[6602872e][server]: added option '7o7' 'sv_spectator_slots 2'
[6602872e][server]: added option '8o8' 'sv_spectator_slots 0'
[6602872e][server]: added option 'Shuffle Teams' 'shuffle_teams'
[6602872e][server]: starting...
[6602872e][datafile]: loading. filename='maps/AliveFNG.map'
[6602872e][datafile]: allocsize=2672
[6602872e][datafile]: readsize=2376
[6602872e][datafile]: swaplen=2396
[6602872e][datafile]: item_size=1948
[6602872e][datafile]: loading done. datafile='maps/AliveFNG.map'
[6602872e][server]: maps/AliveFNG.map crc is df3ceac0
[6602872e][server]: server name is ' Tangerine FNG2 Server'
[6602872e][datafile]: loading data index=19 size=2745 uncompressed=137160
[6602872e][server]: version 0.6 626fce9a778df4d4
[6602872e][engine/mastersrv]: refreshing master server addresses
[6602872e][register]: refreshing ip addresses
[6602872e][engine/mastersrv]: saving addresses
[6602872e][register]: fetching server counts
[66028731][register]: chose 'master3.teeworlds.com' as master, sending heartbeats
[66028768][register]: ERROR: the master server reports that clients can not connect to this server.
[66028768][register]: ERROR: configure your firewall/nat to let through udp on port 8303.
[6602876d][register]: WARNING: Master server is not responding, switching master
[6602876d][engine/mastersrv]: refreshing master server addresses
[6602876d][register]: refreshing ip addresses
[6602876e][engine/mastersrv]: saving addresses
[6602876e][register]: fetching server counts
[66028771][register]: chose 'master3.teeworlds.com' as master, sending heartbeats
[66028777][register]: ERROR: the master server reports that clients can not connect to this server.
[66028778][register]: ERROR: configure your firewall/nat to let through udp on port 8303.
[66028786][register]: ERROR: the master server reports that clients can not connect to this server.
[66028786][register]: ERROR: configure your firewall/nat to let through udp on port 8303.

If you know how to solve it please tell me ,thanks.

[deen]

You have to forward port 8303 (udp) on your router and unblock it in your software firewall. You can also check the article "LAN server" in the DDNet Wiki: https://wiki.ddnet.org/wiki/LAN_Server#Setting_Up_Your_LAN_Server_for_Online_Play