<h1>Additional uncaught exception thrown while handling exception.</h1><h2>Original</h2><p><em class="placeholder">Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException</em>: The service &quot;cache_tags.invalidator.checksum&quot; has a dependency on a non-existent service &quot;redis.factory&quot;. in <em class="placeholder">Symfony\Component\DependencyInjection\Compiler\CheckExceptionOnInvalidReferenceBehaviorPass-&gt;processValue()</em> (line <em class="placeholder">31</em> of <em class="placeholder">/srv/usni.org/releases/16/vendor/symfony/dependency-injection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php</em>). <pre class="backtrace">Symfony\Component\DependencyInjection\Compiler\CheckExceptionOnInvalidReferenceBehaviorPass-&gt;processValue(Object, ) (Line: 60)
Symfony\Component\DependencyInjection\Compiler\AbstractRecursivePass-&gt;processValue(Array, ) (Line: 28)
Symfony\Component\DependencyInjection\Compiler\CheckExceptionOnInvalidReferenceBehaviorPass-&gt;processValue(Array) (Line: 67)
Symfony\Component\DependencyInjection\Compiler\AbstractRecursivePass-&gt;processValue(Object, 1) (Line: 28)
Symfony\Component\DependencyInjection\Compiler\CheckExceptionOnInvalidReferenceBehaviorPass-&gt;processValue(Object, 1) (Line: 60)
Symfony\Component\DependencyInjection\Compiler\AbstractRecursivePass-&gt;processValue(Array, 1) (Line: 28)
Symfony\Component\DependencyInjection\Compiler\CheckExceptionOnInvalidReferenceBehaviorPass-&gt;processValue(Array, 1) (Line: 39)
Symfony\Component\DependencyInjection\Compiler\AbstractRecursivePass-&gt;process(Object) (Line: 140)
Symfony\Component\DependencyInjection\Compiler\Compiler-&gt;compile(Object) (Line: 789)
Symfony\Component\DependencyInjection\ContainerBuilder-&gt;compile() (Line: 1346)
Drupal\Core\DrupalKernel-&gt;compileContainer() (Line: 920)
Drupal\Core\DrupalKernel-&gt;initializeContainer() (Line: 18)
Drupal\Core\Installer\InstallerKernel-&gt;initializeContainer() (Line: 476)
Drupal\Core\DrupalKernel-&gt;boot() (Line: 435)
install_begin_request(Object, Array) (Line: 115)
install_drupal(Object) (Line: 44)
</pre></p><h2>Additional</h2><p><em class="placeholder">Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException</em>: You have requested a non-existent service &quot;theme.manager&quot;. in <em class="placeholder">Symfony\Component\DependencyInjection\ContainerBuilder-&gt;getDefinition()</em> (line <em class="placeholder">1060</em> of <em class="placeholder">/srv/usni.org/releases/16/vendor/symfony/dependency-injection/ContainerBuilder.php</em>). <pre class="backtrace">Symfony\Component\DependencyInjection\ContainerBuilder-&gt;getDefinition(&#039;theme.manager&#039;) (Line: 620)
Symfony\Component\DependencyInjection\ContainerBuilder-&gt;doGet(&#039;theme.manager&#039;, 1) (Line: 588)
Symfony\Component\DependencyInjection\ContainerBuilder-&gt;get(&#039;theme.manager&#039;) (Line: 685)
Drupal::theme() (Line: 21)
_drupal_maintenance_theme() (Line: 745)
drupal_maintenance_theme() (Line: 1028)
install_display_output(Array, Array, Array) (Line: 260)
_drupal_log_error(Array, 1) (Line: 605)
_drupal_exception_handler(Object)
</pre></p><hr />