Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
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