[Help!] Kicked whilst connecting to hub: to many connections

my Bukkit.yml

settings:
allow-end: true
warn-on-overload: true
permissions-file: permissions.yml
update-folder: update
ping-packet-limit: 100
use-exact-login-location: false
plugin-profiling: false
connection-throttle: -1
query-plugins: true
deprecated-verbose: default
shutdown-message: Server closed

BungeeCord config

groups:
md_5:
- admin
disabled_commands:
- disabledcommandhere
player_limit: -1
stats: 9ad4bae9-87ef-4153-92c7-7b653d899ff6
permissions:
default:
- bungeecord.command.server
-...

[Help!] Kicked whilst connecting to hub: to many connections