为什么在运行激活器ui时会出现UnknownHostException: downloads.typesafe.com？

Question

从命令行启动activator ui后，我得到了以下异常。

Checking for a newer version of Activator (current version 1.2.2)...
   ... our current version 1.2.2 looks like the latest.
Found previous process id: 2988
FOUND REPO = activator-local @ file:////C:/shakti/scala/typesafe-activator-1.2.2
/activator-1.2.2/repository
Play server process ID is 5712
[info] play - Application started (Prod)
[info] play - Listening for HTTP on /127.0.0.1:8888
[ERROR] [06/15/2014 05:46:13.851] [default-akka.actor.default-dispatcher-3] [ActorSystem(default)] Failed to download http://downloads.typesafe.com/typesafe-activator/index/v2/index-07064250cfd1cc2444f19c731541332ccf93bc13.zip: sbt.TranslatedIOException: Error opening http://downloads.typesafe.com/typesafe-activator/index/v2/index-07064250cfd1cc2444f19c731541332ccf93bc13.zip: java.net.UnknownHostException: downloads.typesafe.com
[INFO] [06/15/2014 05:46:13.860] [default-akka.actor.default-dispatcher-3] [akka://default/user/template-cache] Unable to check remote server for template updates.
[INFO] [06/15/2014 05:46:19.155] [default-akka.actor.default-dispatcher-2] [akka://default/user/home-socket-1] Firing up web socket

可能的原因是什么以及如何修复它？

Answer 1

这似乎是一个间歇性的问题，由于一些网络问题。它现在运行得很好。

Answer 2

我使用./activator ui来解决这个问题，而不是在linux上使用activator ui