Please help me with the Memory Leak Exceptions.

[Neelesh-Janga]

My Repo: https://github.com/Neelesh-Janga/JWT

I have implemented till register and login functionality.

2023-07-28T00:34:37.293+05:30  INFO 4104 --- [on(2)-127.0.0.1] inMXBeanRegistrar$SpringApplicationAdmin : Application shutdown requested.
2023-07-28T00:34:37.306+05:30  INFO 4104 --- [on(2)-127.0.0.1] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2023-07-28T00:34:37.317+05:30  WARN 4104 --- [on(2)-127.0.0.1] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [BufferPoolPruner-1-thread-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.base@17.0.4.1/jdk.internal.misc.Unsafe.park(Native Method)
 java.base@17.0.4.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252)
 java.base@17.0.4.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:1672)
 java.base@17.0.4.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
 java.base@17.0.4.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
 java.base@17.0.4.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1062)
 java.base@17.0.4.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1122)
 java.base@17.0.4.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
 java.base@17.0.4.1/java.lang.Thread.run(Thread.java:833)
2023-07-28T00:34:37.318+05:30  WARN 4104 --- [on(2)-127.0.0.1] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [cluster-ClusterId{value='64c2bfbb45a85669df77c7d5', description='null'}-localhost:27017] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.base@17.0.4.1/sun.nio.ch.Net.poll(Native Method)
 java.base@17.0.4.1/sun.nio.ch.NioSocketImpl.park(NioSocketImpl.java:181)
 java.base@17.0.4.1/sun.nio.ch.NioSocketImpl.timedRead(NioSocketImpl.java:285)
 java.base@17.0.4.1/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:309)
 java.base@17.0.4.1/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:350)
 java.base@17.0.4.1/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:803)
 java.base@17.0.4.1/java.net.Socket$SocketInputStream.read(Socket.java:966)
 app//com.mongodb.internal.connection.SocketStream.read(SocketStream.java:113)
 app//com.mongodb.internal.connection.SocketStream.read(SocketStream.java:138)
 app//com.mongodb.internal.connection.InternalStreamConnection.receiveResponseBuffers(InternalStreamConnection.java:735)
 app//com.mongodb.internal.connection.InternalStreamConnection.receiveMessageWithAdditionalTimeout(InternalStreamConnection.java:596)
 app//com.mongodb.internal.connection.InternalStreamConnection.receiveCommandMessageResponse(InternalStreamConnection.java:440)
 app//com.mongodb.internal.connection.InternalStreamConnection.receive(InternalStreamConnection.java:397)
 app//com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.lookupServerDescription(DefaultServerMonitor.java:227)
 app//com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:159)
 java.base@17.0.4.1/java.lang.Thread.run(Thread.java:833)
2023-07-28T00:34:37.318+05:30  WARN 4104 --- [on(2)-127.0.0.1] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [cluster-rtt-ClusterId{value='64c2bfbb45a85669df77c7d5', description='null'}-localhost:27017] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.base@17.0.4.1/java.lang.Thread.sleep(Native Method)
 app//com.mongodb.internal.connection.DefaultServerMonitor.waitForNext(DefaultServerMonitor.java:452)
 app//com.mongodb.internal.connection.DefaultServerMonitor.access$1500(DefaultServerMonitor.java:66)
 app//com.mongodb.internal.connection.DefaultServerMonitor$RoundTripTimeRunnable.run(DefaultServerMonitor.java:424)
 java.base@17.0.4.1/java.lang.Thread.run(Thread.java:833)
2023-07-28T00:34:37.319+05:30  WARN 4104 --- [on(2)-127.0.0.1] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [MaintenanceTimer-2-thread-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.base@17.0.4.1/jdk.internal.misc.Unsafe.park(Native Method)
 java.base@17.0.4.1/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252)
 java.base@17.0.4.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:1672)
 java.base@17.0.4.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
 java.base@17.0.4.1/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
 java.base@17.0.4.1/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1062)
 java.base@17.0.4.1/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1122)
 java.base@17.0.4.1/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
 java.base@17.0.4.1/java.lang.Thread.run(Thread.java:833)