Internal Server Error (Template not found) when loading Calendar after upgrade to Nextcloud 13.x

[thohai]

Steps to reproduce

1. Upgrade to Nextcloud 13
2. Upgrade Calendar to 1.6.0
3. Click on the "Calendar" App

Expected behaviour

Calendar should be shown.

Actual behaviour

The following Internal Server Error occurs (see Nextcloud Log)

Server configuration

Operating system: Debian Jessie

Web server: Nginx

Database: MariaDB

PHP version:

Nextcloud version: 13.0.0.x

Updated from an older Nextcloud/ownCloud or fresh install: updated from 12.x

Where did you install Nextcloud from: docker

Signing status:

Signing status

No errors have been found.

List of activated apps:

App list

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your Nextcloud installation folder

Are you using encryption: no

Are you using an external user-backend, if yes which one: no

Client configuration

Browser:

Operating system:

Logs

Nextcloud log (data/nextcloud.log)

Nextcloud log

Exception: template file not found: template:main
/var/www/html/lib/private/legacy/template.php - line 176: OC\Template\TemplateFileLocator->find('main')
/var/www/html/lib/private/legacy/template.php - line 87: OC_Template->findTemplate('', 'calendar', 'main')
/var/www/html/lib/public/AppFramework/Http/TemplateResponse.php - line 151: OC_Template->__construct('calendar', 'main', 'user')
/var/www/html/lib/private/AppFramework/Http/Dispatcher.php - line 114: OCP\AppFramework\Http\TemplateResponse->render()
/var/www/html/lib/private/AppFramework/App.php - line 115: OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\Calendar\Controller\ViewController), 'index')
/var/www/html/lib/private/AppFramework/Routing/RouteActionHandler.php - line 47: OC\AppFramework\App main('ViewController', 'index', Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
[internal function] OC\AppFramework\Routing\RouteActionHandler->__invoke(Array)
/var/www/html/lib/private/Route/Router.php - line 297: call_user_func(Object(OC\AppFramework\Routing\RouteActionHandler), Array)
/var/www/html/lib/base.php - line 998: OC\Route\Router->match('/apps/calendar/')
/var/www/html/index.php - line 37: OC handleRequest()
{main}

[blizzz]

how did you upgrade calendar? are the permissions on the filesystem correct?

[thohai]

The next update fixed the problem

[thohai]

The next update fixed the problem