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:

  [DEBUG util.py:461:  Failed to read package header from file "/var/cache/libdnf5/build-568ee7a1f6612d3e/packages/libevent-2.1.12-11.fc40.ppc64le.rpm]: [rpm cannot process file libevent-2.1.12-11.fc40.ppc64le.rpm]

Issue: The build failed because rpm cannot process file libevent-2.1.12-11.fc40.ppc64le.rpm and install package libevent. The package is required to be installed so the build has failed.
Resolution: This is not an easy issue to resolve. There are multiple possible root causes here. You should retry the build to verify it's not an intermittent problem. If it persists, can analyze the problem yourself by getting a ppc64le system and reproducing it there. You should report this problem to the administrators of the build system.