![無法為 tor 設定網橋，[警告]網橋的金鑰摘要長度錯誤](https://rvso.com/image/1000486/%E7%84%A1%E6%B3%95%E7%82%BA%20tor%20%E8%A8%AD%E5%AE%9A%E7%B6%B2%E6%A9%8B%EF%BC%8C%5B%E8%AD%A6%E5%91%8A%5D%E7%B6%B2%E6%A9%8B%E7%9A%84%E9%87%91%E9%91%B0%E6%91%98%E8%A6%81%E9%95%B7%E5%BA%A6%E9%8C%AF%E8%AA%A4.png)
我想為 tor 設定網橋，但我不能，問題是當我運行時
$tor
命令，我收到此錯誤：
May 27 19:02:36.100 [notice] Tor v0.2.4.20 (git-0d50b03673670de6) running on Linux with Libevent 2.0.21-stable and OpenSSL 1.0.1f.
May 27 19:02:36.100 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning
May 27 19:02:36.100 [notice] Read configuration file "/etc/tor/torrc".
May 27 19:02:36.105 [warn] Key digest for Bridge is wrong length.
May 27 19:02:36.105 [warn] Failed to parse/validate config: Bridge line did not parse. See logs for details.
May 27 19:02:36.105 [err] Reading config failed--see warnings above.
當我在ubuntu 16.04 和tor 版本0.2.7 上使用它們時，這些密鑰可以工作，但在lubuntu 14.04 中，我有tor 版本0.2.4（我寫這篇文章是因為我認為這個版本中可能存在錯誤）
知道如何修復它嗎？