HikariPool$PoolInitializationException if JocOrderStatistics is called

com.sos.scheduler.engine.plugins.newwebservice.routes.ApiRoute [WARN ] - com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: null
com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: null
	at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:512)
	at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:105)
	at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:71)
	at com.sos.scheduler.engine.kernel.database.JdbcConnectionPool$.com$sos$scheduler$engine$kernel$database$JdbcConnectionPool$$newConnectionPool(JdbcConnectionPool.scala:44)
	at com.sos.scheduler.engine.kernel.database.JdbcConnectionPool.com$sos$scheduler$engine$kernel$database$JdbcConnectionPool$$dataSource$lzycompute(JdbcConnectionPool.scala:20)
	at com.sos.scheduler.engine.kernel.database.JdbcConnectionPool.com$sos$scheduler$engine$kernel$database$JdbcConnectionPool$$dataSource(JdbcConnectionPool.scala:20)
	at com.sos.scheduler.engine.kernel.database.JdbcConnectionPool.throttledExecutionContext$lzycompute(JdbcConnectionPool.scala:22)
	at com.sos.scheduler.engine.kernel.database.JdbcConnectionPool.throttledExecutionContext(JdbcConnectionPool.scala:22)
	at com.sos.scheduler.engine.kernel.database.JdbcConnectionPool.future(JdbcConnectionPool.scala:39)
	at com.sos.scheduler.engine.kernel.database.JdbcConnectionPool.readOnly(JdbcConnectionPool.scala:27)
	at com.sos.scheduler.engine.kernel.order.OrderSubsystem.fetchDistributedOrderStatistics(OrderSubsystem.scala:100)
	at com.sos.scheduler.engine.kernel.order.OrderSubsystem.distributedOrderStatistics(OrderSubsystem.scala:93)
	at com.sos.scheduler.engine.kernel.DirectSchedulerClient$$anonfun$jocOrderStatistics$1.apply(DirectSchedulerClient.scala:119)
	at com.sos.scheduler.engine.kernel.DirectSchedulerClient$$anonfun$jocOrderStatistics$1.apply(DirectSchedulerClient.scala:117)
	at com.sos.scheduler.engine.kernel.DirectSchedulerClient$$anonfun$respondWithSnapshotFuture$1.apply(DirectSchedulerClient.scala:192)
	at com.sos.scheduler.engine.kernel.DirectSchedulerClient$$anonfun$respondWithSnapshotFuture$1.apply(DirectSchedulerClient.scala:192)
	at com.sos.scheduler.engine.common.async.FutureCompletion$$anon$1.call(FutureCompletion.scala:46)
	at com.sos.scheduler.engine.common.async.TimedCall$$anonfun$1.apply(TimedCall.scala:21)
	at scala.util.Try$.apply(Try.scala:192)
	at com.sos.scheduler.engine.common.async.TimedCall$class.onApply(TimedCall.scala:21)
	at com.sos.scheduler.engine.common.async.FutureCompletion$$anon$1.onApply(FutureCompletion.scala:43)
	at com.sos.scheduler.engine.common.async.CallRunner.f$1(CallRunner.scala:36)
	at com.sos.scheduler.engine.common.async.CallRunner.executeMatureCalls(CallRunner.scala:42)
	at com.sos.scheduler.engine.kernel.Scheduler$$anonfun$executeCallQueue$1.apply$mcZ$sp(Scheduler.scala:206)
	at com.sos.scheduler.engine.kernel.Scheduler$$anonfun$executeCallQueue$1.apply(Scheduler.scala:206)
	at com.sos.scheduler.engine.kernel.Scheduler$$anonfun$executeCallQueue$1.apply(Scheduler.scala:206)
	at com.sos.scheduler.engine.kernel.async.SchedulerThreadFutures$.inSchedulerThread(SchedulerThreadFutures.scala:15)
	at com.sos.scheduler.engine.kernel.Scheduler.executeCallQueue(Scheduler.scala:206)
	at com.sos.scheduler.engine.kernel.Scheduler.onEnteringSleepState(Scheduler.scala:200)
Caused by: java.lang.AbstractMethodError
	at net.sourceforge.jtds.jdbc.JtdsConnection.isValid(JtdsConnection.java:2833)
	at com.zaxxer.hikari.pool.PoolBase.checkDriverSupport(PoolBase.java:400)
	at com.zaxxer.hikari.pool.PoolBase.setupConnection(PoolBase.java:375)
	at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:346)
	at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:506)
	... 28 more