Optimized server configs (bukkit.yml, spigot.yml, paper.yml, purpur.yml) for version 1.16.5.
Just download, unpack and upload (and replace) to your server files.
To enable End just change "allow-end" in bukkit.yml from false to true.
To enable fish spawning just change "water-animals" and "water-ambint" in bukkit.yml to something higher than 0.
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