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:

  [RPM build errors:
error: Installed (but unpackaged) file(s) found:
   /usr/lib/systemd/system/polkit.service
    Installed (but unpackaged) file(s) found:
   /usr/lib/systemd/system/polkit.service]: [Error reported during packaging phase.]

Issue: A file installed during build process is not packaged properly in %files section of the specfile.
Resolution: Add the file in %files section or remove the file during %build phase if the file is not needed.