Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [01:12:39             out:             "Unknown server reply (HTTP error code 400: Bad Request):",
01:12:39             out:             "&lt;html&gt;&lt;13&gt;",
01:12:39             out:             "&lt;head&gt;&lt;title&gt;400 The SSL certificate error&lt;/title&gt;&lt;/head&gt;&lt;13&gt;",
01:12:39             out:             "&lt;body&gt;&lt;13&gt;",
01:12:39             out:             "&lt;center&gt;&lt;h1&gt;400 Bad Request&lt;/h1&gt;&lt;/center&gt;&lt;13&gt;",
01:12:39             out:             "&lt;center&gt;The SSL certificate error&lt;/center&gt;&lt;13&gt;",
01:12:39             out:             "&lt;hr&gt;&lt;center&gt;openresty&lt;/center&gt;&lt;13&gt;",
01:12:39             out:             "&lt;/body&gt;&lt;13&gt;",
01:12:39             out:             "&lt;/html&gt;&lt;13&gt;"]: [The snippet is interesting, because it contains error message]

Issue: The build failed because problems on Ethel side. subscription is not available 
Resolution: Ping over Slack #ethel team