Problem with OnlyOffice. Infinity load file

Seafile Server
18

Yes, server single IP

CE

What do you mean? Well, I can open the test page by http://10.0.30.35/welcome/
systemd 1 root 34u IPv4 18425 0t0 TCP *:111 (LISTEN)
systemd 1 root 36u IPv6 18427 0t0 TCP *:111 (LISTEN)
rpcbind 746 rpc 4u IPv4 18425 0t0 TCP *:111 (LISTEN)
rpcbind 746 rpc 6u IPv6 18427 0t0 TCP *:111 (LISTEN)
sshd 850 root 5u IPv4 25013 0t0 TCP *:22 (LISTEN)
sshd 850 root 7u IPv6 25022 0t0 TCP *:22 (LISTEN)
beam.smp 851 rabbitmq 83u IPv4 28768 0t0 TCP *:25672 (LISTEN)
beam.smp 851 rabbitmq 98u IPv4 28804 0t0 TCP 127.0.0.1:5672 (LISTEN)
redis-ser 854 redis 6u IPv4 25665 0t0 TCP 127.0.0.1:6379 (LISTEN)
seaf-serv 939 root 16u IPv4 25259 0t0 TCP *:8082 (LISTEN)
epmd 1508 rabbitmq 3u IPv4 28731 0t0 TCP 127.0.0.1:4369 (LISTEN)
epmd 1508 rabbitmq 4u IPv6 28732 0t0 TCP [::1]:4369 (LISTEN)
python3 1560 root 6u IPv4 28059 0t0 TCP *:8083 (LISTEN)
python3 1565 root 6u IPv4 28059 0t0 TCP *:8083 (LISTEN)
python3 1566 root 6u IPv4 28059 0t0 TCP *:8083 (LISTEN)
python3 1567 root 6u IPv4 28059 0t0 TCP *:8083 (LISTEN)
python3 1568 root 6u IPv4 28059 0t0 TCP *:8083 (LISTEN)
python3 1569 root 6u IPv4 28059 0t0 TCP *:8083 (LISTEN)
nginx 2421 root 10u IPv4 33257 0t0 TCP *:80 (LISTEN)
nginx 2421 root 11u IPv6 33258 0t0 TCP *:80 (LISTEN)
nginx 2422 nginx 10u IPv4 33257 0t0 TCP *:80 (LISTEN)
nginx 2422 nginx 11u IPv6 33258 0t0 TCP *:80 (LISTEN)
nginx 2423 nginx 10u IPv4 33257 0t0 TCP *:80 (LISTEN)
nginx 2423 nginx 11u IPv6 33258 0t0 TCP *:80 (LISTEN)
docservic 3243 ds 21u IPv6 36794 0t0 TCP *:8000 (LISTEN)
spellchec 3245 ds 20u IPv6 37340 0t0 TCP *:8080 (LISTEN)
statsd 3246 ds 20u IPv6 36767 0t0 TCP *:8126 (LISTEN)
example 3247 ds 19u IPv6 36795 0t0 TCP *:3000 (LISTEN)

[root@cloud ~]# firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: ens18
  sources:
  services: cockpit dhcpv6-client ssh
  ports: 8083/tcp 8082/tcp 10001/tcp 12001/tcp 80/tcp 8000/tcp
  protocols:
  masquerade: no
  forward-ports:
  source-ports:
  icmp-blocks:
  rich rules:

Do you have a normal manual for installing Seafile + ONLYOFFICE? I’m starting to wonder if I’m doing something right…