Drupal 11.1 Crash

Sorry, should have posted this along with it. This was the error I was getting when trying to visit the site or use drush:

In Drupal.php line 169:

\Drupal::$container is not initialized yet. \Drupal::setContainer() must be
called with a real container.

How about this test upfront:

diff --git a/office_hours.module b/office_hours.module
index f3b535e..59bc7ff 100644
--- a/office_hours.module
+++ b/office_hours.module
@@ -9,12 +9,15 @@ use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\office_hours\Plugin\Field\FieldType\OfficeHoursItemBase;
 
+// Include file, avoiding container error during upgrade.
+if (\Drupal::hasContainer()) {
 // Add theme.api.php hooks.
 \Drupal::moduleHandler()->loadInclude('office_hours', 'inc', 'office_hours.theme');
 // Add ExceptionItem field formatter theming/preprocessing.
 \Drupal::moduleHandler()->loadInclude('office_hours', 'inc', 'office_hours.theme.exceptions');
 // Add views hooks.
 \Drupal::moduleHandler()->loadInclude('office_hours', 'inc', 'office_hours.views');
+}
 
 /**
  * Implements hook_help().

Sure, you're a maintainer so you'd know the code much better than I would. I just hope I helped in some small way.

Indeed, but I am not in the process of updating, so perhaps you chan check in the next run.

Thanks. fixed in my above proposed way.

hook implements in these inc files will be ignored, if \Drupal::hasContainer() return false when the .module file is load by drupal core.

The correct way is to combin these inc file into .module files.

Indeed, that is exactly the purpose. The files are not needed during upgrade. They will be loaded upon the next run, do they not?

Do you have a coding suggestion?

Putting this on Fixed, until it is reported that the committed solution does not solve the problem.