Minecraft Effect Output in Chat?

How can I prevent the following message from being displayed for all other players whenever someone gives himself an effect:

[Playername: Slowness effect applied to playername]

Such messages are only sent to server operators🤔

Why should everyone see them? Does every player have surgery?

I think you have to set commandblockoutput false in chat / gamerule but I'm not quite sure

By entering this command:

/ gamerule sendCommandFeedback false

I have already tried: Then it is just no longer shown to itself. But the operators do.

We're good friends, four of us play, and we share the cost of the server. Therefore every Op.

OP is stupid anyway.

A permissions system like Luckperms is better.
Correctly set there are the same permissions but not these messages.

Thank you, but that's only if the command is executed through a command block - and not through the chat.

There was something in config files with which you can deactivate it.

Something with PrintConsoleToChat or something like that. Just take a look through the whole ymls.

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