Fix for error message in 1.18.2 servers relating to villager exp bottle trade disable
Fix for error message in 1.18.1 servers, similarly relating to exp bottle trade with villagers
Adjusted default xpEarn value from 10 to 8, so that by default there will be 20% loss in exp conversions. This wont have any effect if you already have config file setup, its more for the new server to minimize chances in having exploits where another plugin would add small amount of exp or give a chance to double gained exp in general. You can always adjust this value on your own to fit your own needs.