小编M. *_*tig的帖子

我尝试按照官方迁移指南将Play 2.4.6项目迁移到Play 2.5.8:https://www.playframework.com/documentation/2.5.x/Migration25

数据库成功连接后,我收到以下错误消息(Full Stacktrace):

[info] p.a.d.DefaultDBApi - Database [default] connected at XXX;
[error] application - 

! @71in3ncdp - Internal server error, for (GET) [/de] ->

play.api.UnexpectedException: Unexpected exception[CreationException: Unable to create injector, see the following errors:

1) Error in custom provider, java.lang.NullPointerException
  while locating play.api.db.evolutions.ApplicationEvolutionsProvider
  at play.api.db.evolutions.EvolutionsModule.bindings(EvolutionsModule.scala:22):
Binding(class play.api.db.evolutions.ApplicationEvolutions to ProviderConstructionTarget(class play.api.db.evolutions.ApplicationEvolutionsProvider) eagerly) (via modules: com.google.inject.util.Modules$OverrideModule -> play.api.inject.guice.GuiceableModuleConversions$$anon$1)
  while locating play.api.db.evolutions.ApplicationEvolutions

1 error]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:180)
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:131)
    at scala.Option.map(Option.scala:146)
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:131)
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:129)
    at scala.util.Success.flatMap(Try.scala:231)
    at …