Module install error + Undefined index: id

Same here. Drupal 8.2.1 and the latest dev.
After creating a calendar from template (using the "Content authored on" template getting lots of errors, like

Notice: Undefined index: id in Drupal\views\Plugin\ViewsHandlerManager->getHandler() (line 104 of core/modules/views/src/Plugin/ViewsHandlerManager.php).
Notice: Undefined variable: rows in Drupal\calendar\Plugin\views\row\Calendar->render() (line 528 of modules/contrib/calendar/src/Plugin/views/row/Calendar.php).
Warning: Invalid argument supplied for foreach() in Drupal\calendar\Plugin\views\style\Calendar->render() (line 544 of modules/contrib/calendar/src/Plugin/views/style/Calendar.php).

Hello,

I have the same problem. After enabling Calendar module I'm getting a lots of errors, like:
Notice: Undefined index: id in calendar_views_data_alter() (line 16 of modules/calendar/calendar.views.inc).

And Not yet created any calendar view.

Thanks!

Same problem here. The calendar itself seems to work and display ok, just has those errors above it.

For what it's worth, we had a similar problem with our Calendar and it ended up being a conflict with the Scheduler module. This Scheduler patch resolved our problem: https://www.drupal.org/node/2849490

Proposed patch

We had the same error and we were apply the patch.
The error has been solved.
Thanks!

I applied the patch, as well as updated scheduler and the errors persist.

I can't reproduce the issue with the latest dev and Drupal 8.3.0.

Unable to reproduce this issue with fresh 8.3.2 installation and calendar 8.x-1.x-dev (downloaded today).

Not surprising since this seems to arise when other modules neglect to set 'id'. I don't see the harm in applying this patch but maybe better to first explore whether there might be a better way to flag that the property is missing.

I get this error again in Drupal core 8.3.4

Error is present with Drupal core 8.3.5 and calendar 8.x-1.x-dev

Update:
The suggested patch does not resolve the issue and log events occur randomly.

Just for info, the Scheduler issue #2849490: Scheduler + Calendar module throws notice for "Undefined index: id" is now fixed.

Same issue and fix related here: #2845257: Undefined index: id in calendar_views_data_alter() I'm still having the same error.

Patch does not apply via composer nor does it patch with patch -p1 < calendar-2764741-9-properties-check-fix.patch however if you do a patch < calendar-2764741-9-properties-check-fix.patch it will patch. Would be nice to get this resolved and committed.

Attached a re-rolled patch.

I think this has been fixed with: https://www.drupal.org/project/calendar/issues/2969675

Yes the fix in #9 and #21 above is identical to #2969675-4: Notice: Undefined index: id in calendar/calendar.views.inc on line 16 commit on 3rd July

Not sure why this original issue (from July 2016) went so long without any commit, but then the new one created in May 2018 gets fixed within 2 monrhs with identical patch. But good that is it done.