Is there a Mod 1.16.5 Minecraft compatible to allow certain players to use OP commands?

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    Hello there,


    I'm trying to set up a Minecraft server on 1.16.5 Forge, running Pixelmon and some other side mods.


    I'd like people who are not mods to be able to run a command, "/checkspawns legendary", but only OP people can do it.


    I've tried using a mod called "thut.permissions", but even setting it all up, it said that "only OP players can use such command". So I'm back at the start.


    Do you know about a mod that can do the trick?


    Thanks in advance,