Add The file extension .gz to the file manager. I am Using Luckperms And I have used Luckperms A lot in the past on other servers so I exported My Luckperms Options And was wanting to import it into a server I am making although The file name is aye.json.gz so i get an error saying:
Error
The file extension is invalid. Allowed extensions: .sk, .txt, .json, .yml, .mcfunction, .mcmeta, .properties, .schematic, .schem, .png
i just did a bit of research, and you should be able to still import them