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Unable to instantiate class: com.communitect.FlywayCleaner
org.flywaydb.core.api.FlywayException: Unable to instantiate class: com.communitect.FlywayCleaner	at org.flywaydb.core.internal.util.ClassUtils.instantiateAll(ClassUtils.java:67)	at org.flywaydb.core.Flyway.setCallbacks(Flyway.java:780)	at org.flywaydb.sbt.FlywayPlugin$FlywayOps$.configure$extension2(FlywayPlugin.scala:246)	at org.flywaydb.sbt.FlywayPlugin$FlywayOps$.configure$extension0(FlywayPlugin.scala:226)	at org.flywaydb.sbt.FlywayPlugin$Flyway$.apply(FlywayPlugin.scala:210)	at org.flywaydb.sbt.FlywayPlugin$$anonfun$flywaySettings$35$$anonfun$apply$6.apply$mcV$sp(FlywayPlugin.scala:177)	at org.flywaydb.sbt.FlywayPlugin$$anonfun$flywaySettings$35$$anonfun$apply$6.apply(FlywayPlugin.scala:177)	at org.flywaydb.sbt.FlywayPlugin$$anonfun$flywaySettings$35$$anonfun$apply$6.apply(FlywayPlugin.scala:177)	at org.flywaydb.sbt.FlywayPlugin$.withContextClassLoader(FlywayPlugin.scala:201)	at org.flywaydb.sbt.FlywayPlugin$.org$flywaydb$sbt$FlywayPlugin$$withPrepared(FlywayPlugin.scala:184)	at org.flywaydb.sbt.FlywayPlugin$$anonfun$flywaySettings$35.apply(FlywayPlugin.scala:177)	at org.flywaydb.sbt.FlywayPlugin$$anonfun$flywaySettings$35.apply(FlywayPlugin.scala:177)	at scala.Function3$$anonfun$tupled$1.apply(Function3.scala:35)	at scala.Function3$$anonfun$tupled$1.apply(Function3.scala:34)	at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)	at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:42)	at sbt.std.Transform$$anon$4.work(System.scala:64)	at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)	at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)	at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)	at sbt.Execute.work(Execute.scala:244)	at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)	at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)	at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)	at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:744)