import scala.concurrent.ExecutionContext.Implicits.global

class UserStorageService(
  @Qualifier("userdb") val databaseConnector: DatabaseConnector
)(implicit executionContext: ExecutionContext) extends UserStorageTable {

private val userStorageService = appContext.getBean(classOf[UserStorageService])

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException:
No qualifying bean of type 'scala.concurrent.ExecutionContext' available:
expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}