Class not found exception of Silhouette Env trait

Hi,
this is the first time I get this error. I used Silhouette a number of times in my projects. And also I seperated the logic from multiple modules which displays for example admin service or basket service or something else.
Now and this is the first time I get a

Caused by: java.lang.ClassNotFoundException: customer.DefaultEnv
package modules

import java.util.concurrent.Executors

import com.google.inject.name.Named
import com.google.inject.{AbstractModule, Provides}
import com.mohiva.play.silhouette.api._
import com.mohiva.play.silhouette.api.actions.{SecuredErrorHandler, UnsecuredErrorHandler}
import com.mohiva.play.silhouette.api.crypto.{Crypter, CrypterAuthenticatorEncoder, Signer}
import com.mohiva.play.silhouette.api.repositories.AuthInfoRepository
import com.mohiva.play.silhouette.api.services.{AuthenticatorService, AvatarService}
import com.mohiva.play.silhouette.api.util._
import com.mohiva.play.silhouette.crypto.{JcaCrypter, JcaCrypterSettings, JcaSigner, JcaSignerSettings}
import com.mohiva.play.silhouette.impl.authenticators.{CookieAuthenticator, CookieAuthenticatorService, CookieAuthenticatorSettings}
import com.mohiva.play.silhouette.impl.providers.SocialProviderRegistry
import com.mohiva.play.silhouette.impl.providers.oauth1.{TwitterProvider, XingProvider}
import com.mohiva.play.silhouette.impl.providers.oauth2.{FacebookProvider, GoogleProvider, VKProvider}
import com.mohiva.play.silhouette.impl.providers.openid.YahooProvider
import com.mohiva.play.silhouette.impl.services.GravatarService
import com.mohiva.play.silhouette.impl.util.{DefaultFingerprintGenerator, PlayCacheLayer, SecureRandomIDGenerator}
import com.mohiva.play.silhouette.password.{BCryptPasswordHasher, BCryptSha256PasswordHasher}
import com.mohiva.play.silhouette.persistence.daos.DelegableAuthInfoDAO
import com.mohiva.play.silhouette.persistence.repositories.DelegableAuthInfoRepository
import handler.{CustomSecuredErrorHandler, CustomUnsecuredErrorHandler}
import net.codingwell.scalaguice.ScalaModule
import play.api.Configuration
import play.api.libs.ws.WSClient
import play.api.mvc.CookieHeaderEncoding
import customer.{Account, DefaultCookieEnv, DefaultEnv}
import customer.repositories.{AccountDAO, AccountSilhouetteDAO, PasswordInfoDAO}
import customer.services.{UserServiceImpl, UserSilhouetteService}

import scala.concurrent.ExecutionContext
class SilhouetteModule extends AbstractModule with ScalaModule {

  import net.ceedubs.ficus.Ficus._
  import net.ceedubs.ficus.readers.ArbitraryTypeReader._

  private implicit val silhouetteEC = ExecutionContext.fromExecutor(Executors.newCachedThreadPool)

  import net.ceedubs.ficus.readers.ValueReader
  import play.api.mvc.Cookie

//  implicit val sameSiteReader: ValueReader[Option[Option[Cookie.SameSite]]] = (config: Config, path: String) => {
//    if (config.hasPathOrNull(path)){
//      if (config.getIsNull(path))
//        Some(None)
//      else
//        Some(Cookie.SameSite.parse(config.getString(path)))
//    } else None
//  }

  implicit val sameSiteReader: ValueReader[Option[Cookie.SameSite]] = ValueReader.relative(cfg => Cookie.SameSite.parse(cfg.as[String]))



  override def configure(): Unit = {

    bind[Silhouette[DefaultEnv]].to[SilhouetteProvider[DefaultEnv]]

    bind[UnsecuredErrorHandler].to[CustomUnsecuredErrorHandler]
    bind[SecuredErrorHandler].to[CustomSecuredErrorHandler]

    bind[UserSilhouetteService].to[UserServiceImpl]
    bind[AccountSilhouetteDAO].to[AccountDAO]
    bind[DelegableAuthInfoDAO[PasswordInfo]].to[PasswordInfoDAO]

    bind[CacheLayer].to[PlayCacheLayer]
    bind[IDGenerator].toInstance(new SecureRandomIDGenerator())
    bind[PasswordHasher].toInstance(new BCryptPasswordHasher)
    bind[FingerprintGenerator].toInstance(new DefaultFingerprintGenerator(false))
    bind[EventBus].toInstance(EventBus())
    bind[Clock].toInstance(Clock())
  }

  /**
    * Provides the HTTP layer implementation.
    *
    * @param client Play's WS client.
    * @return The HTTP layer implementation.
    */
  @Provides
  def provideHTTPLayer(client: WSClient): HTTPLayer = new PlayHTTPLayer(client)

  /**
    * Provides the cookie signer for the authenticator.
    *
    * @param configuration The Play configuration.
    * @return The cookie signer for the authenticator.
    */
  @Provides
  @Named("authenticator-signer")
  def provideAuthenticatorCookieSigner(configuration: Configuration): Signer = {
    val config = configuration.underlying.as[JcaSignerSettings]("silhouette.authenticator.signer")
    new JcaSigner(config)
  }

  /**
    * Provides the crypter for the authenticator.
    *
    * @param configuration The Play configuration.
    * @return The crypter for the authenticator.
    */
  @Provides
  @Named("authenticator-crypter")
  def provideAuthenticatorCrypter(configuration: Configuration): Crypter = {
    val config = configuration.underlying.as[JcaCrypterSettings]("silhouette.authenticator.crypter")
    new JcaCrypter(config)
  }

  /**
    * Provides the Silhouette environment.
    *
    * @param userService The user service implementation.
    * @param authenticatorService The authentication service implementation.
    * @param eventBus The event bus instance.
    * @return The Silhouette environment.
    */
  @Provides
  def provideEnvironment(userService: UserSilhouetteService,
                         authenticatorService: AuthenticatorService[CookieAuthenticator],
                         eventBus: EventBus): Environment[DefaultCookieEnv] = Environment[DefaultCookieEnv](
    userService,
    authenticatorService,
    Seq(),
    eventBus
  )


  /**
    * Provides the social provider registry.
    *
    * @param facebookProvider The Facebook provider implementation.
    * @param googleProvider The Google provider implementation.
    * @param vkProvider The VK provider implementation.
    * @param clefProvider The Clef provider implementation.
    * @param twitterProvider The Twitter provider implementation.
    * @param xingProvider The Xing provider implementation.
    * @param yahooProvider The Yahoo provider implementation.
    * @return The Silhouette environment.
    */
  @Provides
  def provideSocialProviderRegistry(facebookProvider: FacebookProvider,
                                    googleProvider: GoogleProvider,
                                    vkProvider: VKProvider,
                                    /*clefProvider: ClefProvider,*/
                                    twitterProvider: TwitterProvider,
                                    xingProvider: XingProvider,
                                    yahooProvider: YahooProvider): SocialProviderRegistry = {

    SocialProviderRegistry(Seq(
      googleProvider,
      facebookProvider,
      twitterProvider,
      vkProvider,
      xingProvider,
      yahooProvider/*,
      clefProvider*/
    ))
  }


  /**
    * Provides the authenticator service.
    *
    * @param crypter              The crypter implementation.
    * @param idGenerator          The ID generator implementation.
    * @param configuration        The Play configuration.
    * @param clock                The clock instance.
    * @return The authenticator service.
    */
  @Provides
  def provideAuthenticatorService(@Named("authenticator-signer") signer: Signer,
                                  @Named("authenticator-crypter") crypter: Crypter,
                                  cookieHeaderEncoding: CookieHeaderEncoding,
                                  fingerprintGenerator: FingerprintGenerator,
                                  idGenerator: IDGenerator,
                                  configuration: Configuration,
                                  clock: Clock): AuthenticatorService[CookieAuthenticator] = {
    val config = configuration.underlying.as[CookieAuthenticatorSettings]("silhouette.authenticator")
    val authenticatorEncoder = new CrypterAuthenticatorEncoder(crypter)

    new CookieAuthenticatorService(config, None, signer, cookieHeaderEncoding, authenticatorEncoder, fingerprintGenerator, idGenerator, clock)
  }

  /**
    * Provides the password hasher registry.
    *
    * @return The password hasher registry.
    */
  @Provides
  def providePasswordHasherRegistry(): PasswordHasherRegistry = {
    PasswordHasherRegistry(new BCryptSha256PasswordHasher(), Seq(new BCryptPasswordHasher()))
  }

  /**
    * Provides the auth info repository.
    *
    * @param passwordInfoDAO The implementation of the delegable password auth info DAO.
    * @return The auth info repository instance.
    *         Hier bitte lesen: https://github.com/hkirk/play-silhouette-slick-seed/blob/master/app/modules/modules.SilhouetteModule.scala
    */
  @Provides
  def provideAuthInfoRepository(passwordInfoDAO: DelegableAuthInfoDAO[PasswordInfo]): AuthInfoRepository =
    new DelegableAuthInfoRepository(passwordInfoDAO)

  /**
    * Provides the avatar service.
    *
    * @param httpLayer The HTTP layer implementation.
    * @return The avatar service implementation.
    */
  @Provides
  def provideAvatarService(httpLayer: HTTPLayer): AvatarService = new GravatarService(httpLayer)

}
play.api.UnexpectedException: Unexpected exception[ClassNotFoundException: customer.DefaultEnv]
	at play.core.server.DevServerStart$$anon$1.reload(DevServerStart.scala:196)
	at play.core.server.DevServerStart$$anon$1.get(DevServerStart.scala:127)
	at play.core.server.AkkaHttpServer.handleRequest(AkkaHttpServer.scala:253)
	at play.core.server.AkkaHttpServer.$anonfun$createServerBinding$1(AkkaHttpServer.scala:149)
	at akka.stream.impl.fusing.MapAsync$$anon$30.onPush(Ops.scala:1207)
	at akka.stream.impl.fusing.GraphInterpreter.processPush(GraphInterpreter.scala:519)
	at akka.stream.impl.fusing.GraphInterpreter.execute(GraphInterpreter.scala:411)
	at akka.stream.impl.fusing.GraphInterpreterShell.runBatch(ActorGraphInterpreter.scala:588)
	at akka.stream.impl.fusing.GraphInterpreterShell$AsyncInput.execute(ActorGraphInterpreter.scala:472)
	at akka.stream.impl.fusing.GraphInterpreterShell.processEvent(ActorGraphInterpreter.scala:563)
Caused by: java.lang.ClassNotFoundException: customer.DefaultEnv
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:348)
	at scala.reflect.runtime.JavaMirrors$JavaMirror.javaClass(JavaMirrors.scala:556)
	at scala.reflect.runtime.JavaMirrors$JavaMirror.$anonfun$classToJava$1(JavaMirrors.scala:1232)
	at scala.reflect.runtime.TwoWayCaches$TwoWayCache.$anonfun$toJava$1(TwoWayCaches.scala:49)
	at scala.reflect.runtime.TwoWayCaches$TwoWayCache.toJava(TwoWayCaches.scala:45)
	at scala.reflect.runtime.JavaMirrors$JavaMirror.classToJava(JavaMirrors.scala:1224)

The problem is also not solved if I create a trait inside this package. Where is my mistake?
Thank you