15:45:32 [SEVERE] Task BungeeTask(sched=net.md_5.bungee.scheduler.BungeeScheduler@71ba6d4e, id=7, owner=me.lucko.luckperms.bungee.LPBungeeBootstrap@7b36aa0c, task=me.lucko.luckperms.common.buffers.BufferedRequest$Processor@28897df4, delay=0, period=0, running=true) encountered an exception
java.util.concurrent.CompletionException: java.sql.SQLTransientConnectionException: luckperms - Connection is not available, request timed out after 5000ms.
at me.lucko.luckperms.common.storage.AbstractStorage.lambda$makeFuture$1(AbstractStorage.java:105)
at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1626)
at net.md_5.bungee.scheduler.BungeeTask.run(BungeeTask.java:63)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.sql.SQLTransientConnectionException: luckperms - Connection is not available, request timed out after 5000ms.
at me.lucko.luckperms.lib.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:676)
at me.lucko.luckperms.lib.hikari.pool.HikariPool.getConnection(HikariPool.java:190)
at me.lucko.luckperms.lib.hikari.pool.HikariPool.getConnection(HikariPool.java:155)
at me.lucko.luckperms.lib.hikari.HikariDataSource.getConnection(HikariDataSource.java:100)
at me.lucko.luckperms.common.storage.dao.sql.connection.hikari.HikariConnectionFactory.getConnection(HikariConnectionFactory.java:132)
at me.lucko.luckperms.common.storage.dao.sql.SqlDao.loadAllGroups(SqlDao.java:609)
at me.lucko.luckperms.common.storage.AbstractStorage.lambda$loadAllGroups$10(AbstractStorage.java:214)
at me.lucko.luckperms.common.storage.AbstractStorage.lambda$makeFuture$1(AbstractStorage.java:102)
... 5 more
Caused by: me.lucko.luckperms.lib.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at me.lucko.luckperms.lib.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at me.lucko.luckperms.lib.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990)
at me.lucko.luckperms.lib.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:342)
at me.lucko.luckperms.lib.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2188)
at me.lucko.luckperms.lib.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2221)
at me.lucko.luckperms.lib.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2016)
at me.lucko.luckperms.lib.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:776)
at me.lucko.luckperms.lib.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at me.lucko.luckperms.lib.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at me.lucko.luckperms.lib.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:386)
at me.lucko.luckperms.lib.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)
at me.lucko.luckperms.lib.mysql.jdbc.jdbc2.optional.MysqlDataSource.getConnection(MysqlDataSource.java:428)
at me.lucko.luckperms.lib.mysql.jdbc.jdbc2.optional.MysqlDataSource.getConnection(MysqlDataSource.java:136)
at me.lucko.luckperms.lib.hikari.pool.PoolBase.newConnection(PoolBase.java:367)
at me.lucko.luckperms.lib.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:196)
at me.lucko.luckperms.lib.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467)
at me.lucko.luckperms.lib.hikari.pool.HikariPool.access$100(HikariPool.java:71)
at me.lucko.luckperms.lib.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:706)
at me.lucko.luckperms.lib.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:692)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
... 3 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at me.lucko.luckperms.lib.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211)
at me.lucko.luckperms.lib.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:301)