Type of bug

Compatibility issue, Error in console

/ess dump all output

https://essentialsx.net/dump.html?id=cb48443036fe4eb1891e0616f84d3bc7

Error log (if applicable)

https://paste.gg/p/anonymous/df206df88c4b48c8a98a80c9e16a21cf

Bug description

when running /spawnmob it only works sometimes, and when it doesn't, an error shows in console

Steps to reproduce

1. keeping trying to use spawnmob with a valid mob and number while moving around until it doesn't work

Expected behaviour

it works and doesn't error in console

Actual behaviour

it errors in console and nothing happens