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:

  [PHPUnit 12.1.5 by Sebastian Bergmann and contributors.]: [The test suite is using PHPUnit version 12.1.5]
=============
[FAILURES!
Tests: 16, Assertions: 14, Failures: 2, PHPUnit Deprecations: 1, Skipped: 2.
]: [This is the test suite summary.
Test suite have failures.]
=============
[1) /builddir/build/BUILD/phpcov-11.0.0-build/phpcov-491eef985e63f351eb997ba02cf76cdf749f2043/tests/end-to-end/patch-coverage/valid-arguments-with-invalid-path-prefix.phpt
Failed asserting that string matches format description.
--- Expected
+++ Actual
@@ @@
 phpcov 11.0.0 by Sebastian Bergmann.
 
-Unable to detect executable lines that were changed.
-Are you sure your --path-prefix is correct?
-int(2)
+
+Fatal error: Uncaught TypeError: Cannot assign __PHP_Incomplete_Class to property SebastianBergmann\CodeCoverage\CodeCoverage::$analyser of type ?SebastianBergmann\CodeCoverage\StaticAnalysis\FileAnalyser in /builddir/build/BUILD/phpcov-11.0.0-build/phpcov-491eef985e63f351eb997ba02cf76cdf749f2043/tests/fixture/example/coverage/testGreetsWorld.cov:2
+Stack trace:
+#0 /builddir/build/BUILD/phpcov-11.0.0-build/phpcov-491eef985e63f351eb997ba02cf76cdf749f2043/tests/fixture/example/coverage/testGreetsWorld.cov(2): unserialize()
+#1 /builddir/build/BUILD/phpcov-11.0.0-build/BUILDROOT/usr/share/php/SebastianBergmann/PHPCOV/PatchCoverage.php(35): include('...')
+#2 /builddir/build/BUILD/phpcov-11.0.0-build/BUILDROOT/usr/share/php/SebastianBergmann/PHPCOV/cli/PatchCoverageCommand.php(41): SebastianBergmann\PHPCOV\PatchCoverage->execute()
+#3 /builddir/build/BUILD/phpcov-11.0.0-build/BUILDROOT/usr/share/php/SebastianBergmann/PHPCOV/cli/Application.php(52): SebastianBergmann\PHPCOV\PatchCoverageCommand->run()
+#4 Standard input code(10): SebastianBergmann\PHPCOV\Application->run()
+#5 {main}
+  thrown in /builddir/build/BUILD/phpcov-11.0.0-build/phpcov-491eef985e63f351eb997ba02cf76cdf749f2043/tests/fixture/example/coverage/testGreetsWorld.cov on line 2
/builddir/build/BUILD/phpcov-11.0.0-build/phpcov-491eef985e63f351eb997ba02cf76cdf749f2043/tests/end-to-end/patch-coverage/valid-arguments-with-invalid-path-prefix.phpt:19
]: [This is the detailed failure description, with diff from expected and actual output]

Issue: PHP raises a TypeError exception because of __PHP_Incomplete_Class. 
This may be related to serialization and missing extension
Resolution: Analyse the valid-arguments-with-invalid-path-prefix.phpt unit test