This plugin should work perfectly fine on servers running MC version 1.16.1.
Players can now get a "blindness" effect when they lose a drink, in addition to a "confusion" effect. Either regenerate the config.yml file or add the following lines manually.
Code (YAML):
# This number is how many seconds the blindness effect lasts when a player loses a drink. # Set to 0 to disable. blindnessEffect: 10