What steps will reproduce the problem?

I created a new city and after that the following warning starts spamming into the console

I'm sorry if something is not clear - I'm translating from a translator

What is the expected output?

[13:07:54 WARN]: [Towny] Async task for Towny v0.101.0.0 generated an exception
java.lang.IncompatibleClassChangeError: Method 'org.bukkit.attribute.Attribute org.bukkit.attribute.Attribute.valueOf(java.lang.String)' must be Methodref constant
at com.palmergames.bukkit.towny.tasks.HealthRegenTimerTask.getMaxHealthAttribute(HealthRegenTimerTask.java:105) ~[Towny-0.101.0.0.jar:?]
at com.palmergames.bukkit.towny.tasks.HealthRegenTimerTask.evaluateHealth(HealthRegenTimerTask.java:81) ~[Towny-0.101.0.0.jar:?]
at com.palmergames.bukkit.towny.tasks.HealthRegenTimerTask.evaluatePlayer(HealthRegenTimerTask.java:63) ~[Towny-0.101.0.0.jar:?]
at com.palmergames.bukkit.towny.tasks.HealthRegenTimerTask.run(HealthRegenTimerTask.java:44) ~[Towny-0.101.0.0.jar:?]
at com.palmergames.bukkit.towny.scheduling.TaskScheduler.lambda$runAsyncRepeating$11(TaskScheduler.java:122) ~[Towny-0.101.0.0.jar:?]
at com.palmergames.bukkit.towny.scheduling.impl.FoliaTaskScheduler.lambda$runAsyncRepeating$8(FoliaTaskScheduler.java:145) ~[Towny-0.101.0.0.jar:?]
at io.papermc.paper.threadedregions.scheduler.FoliaAsyncScheduler$AsyncScheduledTask.run(FoliaAsyncScheduler.java:217) ~[purpur-1.20.1.jar:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) ~[?:?]
at java.lang.Thread.run(Thread.java:1583) ~[?:?]

Towny version

Towny v0.101.0.0

Server version

PurPur 1.20.1

Please use Pastebin.com to link the following files

1. Your full server startup from the logs\latest.log:
2. Your Towny config.yml:
3. Your townyperms.yml:
4. Your log's error:

(optional) If this is to do with permissions,
5. Your permissions file:

(optional) If this is to do with chat,
6. Your chatconfig.yml:
7. Your channels.yml: