FMOD Error: An invalid object handle was used.

When starting my dedicated server, I always have this error message in my log.
Everything seems to work well though.

I used this guid to set it up: https://steamcommunity.com/sharedfiles/filedetails/?id=635281092

I have no mods enabled and deleted the save folder from overworld and caves. This log entry is still there.

I wonder what this error entry means? When I start a normal game without server, the error does not appaer.

My cluster.ini:
 

[GAMEPLAY]
game_mode = endless
max_players = 10
pvp = false
pause_when_empty = true

[NETWORK]
cluster_name = Serp Server
cluster_description = Welcome
cluster_password = ***
cluster_intention = social
autosaver_enabled = true
enable_vote_kick = false
lan_only_cluster = true

[MISC]
console_enabled = true

[SHARD]
shard_enabled = true
bind_ip = 127.0.0.1
master_ip = 127.0.0.1
master_port = 11001
cluster_key = dst

and server.ini:
 

[NETWORK]
server_port = 10999

[SHARD]
is_master = true


[STEAM]
master_server_port = 12346
authentication_port = 12345