isSprinting condition not found

Summary

the isSprinting condition cannot be found by Mythic Mobs and causes a stacktrace error when reloading Mythic Mobs if it is in a config file.

Steps to reproduce

1. create a fresh server using the newest paper build
2. install only the newest MM dev build
3. add the following to your exampleskills.yml file:

TestingIsSprinting:
  Conditions:
  - isSprinting{} true
  Skills:
  - message{msg="Moovin and a Groovin"} @self

4. reload the plugin and see the stacktrace error and that isSprinting isnt found.

Current behavior

cannot use isSprinting condition

Server log file

Full Latest.log: https://pastebin.com/VkCYMdnx

Error Snippet: https://pastebin.com/Xxea8VSr

Not sure if it helps but I am using Java 11.