Problem/Bug Can't spawn villagers.

I have few problems with villagers.
- Villagers can't be spawned using spawn eggs or /summon command
but other mobs can spawn.
/summon says "Unable to summon entity".
I tried to use /wg debug but it says "No plugins cancelled the event."

- I have 1 more problem: villagers can't pick up any food => villager farms doesn't working.

Thank u 4 help and sorry for my bad english

 

server.properties (open) server.properties (close)

#Minecraft server properties
#Wed Apr 15 13:07:21 MSK 2020
spawn-protection=16
max-tick-time=60000
query.port=25565
generator-settings=
force-gamemode=false
allow-nether=true
enforce-whitelist=false
gamemode=survival
broadcast-console-to-ops=true
enable-query=true
player-idle-timeout=0
difficulty=hard
spawn-monsters=true
broadcast-rcon-to-ops=true
op-permission-level=4
pvp=true
snooper-enabled=true
level-type=default
hardcore=false
enable-command-block=false
max-players=150
network-compression-threshold=256
resource-pack-sha1=
max-world-size=29999984
function-permission-level=2
server.ip=
rcon.port=26507
server-port=36000
debug=false
server-ip=
spawn-npcs=false
allow-flight=false
level-name=world
view-distance=8
resource-pack=https\://keycraft.xyz/keycraft-rp1.zip
spawn-animals=true
white-list=false
rcon.password=not today >
generate-structures=true
online-mode=false
max-build-height=256
level-seed=no
prevent-proxy-connections=false
use-native-transport=true
enable-rcon=true
motd=KeyCraft Classic