ServerHangWatchdog detected sponge 1.16.5-36.2.5-8.1.0-RC1278

My server crash this. How can I fix it ?

---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.

Description: Watching Server

java.lang.Error: ServerHangWatchdog detected that a single server tick took 61.42 seconds (should be max 0.05)
	at sun.misc.Unsafe.park(Native Method) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285) ~[?:1.8.0_362] {}
	at org.spongepowered.common.scheduler.AsyncScheduler.addTask(AsyncScheduler.java:122) ~[spongeforge:1.16.5-36.2.5-8.1.0-RC1278] {re:classloading}
	at org.spongepowered.common.scheduler.SpongeScheduler.submit(SpongeScheduler.java:178) ~[spongeforge:1.16.5-36.2.5-8.1.0-RC1278] {re:classloading,re:mixin}
	at org.spongepowered.common.scheduler.SpongeScheduler.submit(SpongeScheduler.java:166) ~[spongeforge:1.16.5-36.2.5-8.1.0-RC1278] {re:classloading,re:mixin}
	at org.spongepowered.common.scheduler.SpongeTaskExecutorService.submitTask(SpongeTaskExecutorService.java:195) ~[spongeforge:1.16.5-36.2.5-8.1.0-RC1278] {re:classloading}
	at org.spongepowered.common.scheduler.SpongeTaskExecutorService.submit(SpongeTaskExecutorService.java:105) ~[spongeforge:1.16.5-36.2.5-8.1.0-RC1278] {re:classloading}
-- Head --
Thread: Server Watchdog
Stacktrace:
	at sun.misc.Unsafe.park(Native Method) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209) ~[?:1.8.0_362] {}
	at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285) ~[?:1.8.0_362] {}