Cannot export calendars - Exception thrown

[CapSel]

Steps to reproduce

1. Go to Calendar App
2. Click "pencil" next to calendar you want to export - for example "Personal"
3. Click export (nothing happens)
4. Click export (empty page)

Expected behavior

I wish to have an ICS file that I could import into another instance of nextcloud.

Actual behaviour

Nothing is shown.

Calendar app version

4.2.0

CalDAV-clients used

Web browser

Browser

Newest firefox (108?)

Client operating system

Arch Linux, MacOS

Server operating system

ArchLinux, Ubuntu with dockerized nextcloud:fpm-alpine

Web server

Nginx

Database engine version

PostgreSQL

PHP engine version

None

Nextcloud version

25.0.2

Updated from an older installed version or fresh install

Fresh install

List of activated apps

No response

Nextcloud configuration

No response

Web server error log

No response

Log file

{"reqId":"XH5JPZQHzAEEskBLQ4SJ","level":3,"time":"2022-12-31T11:24:39+00:00","remoteAddr":"89.69.69.250","user":"capsel","app":"index","method":"POST","url":"/index.php/apps/calendar/v1/config/view","message":"OCA\\Calendar\\Controller\\SettingsController::setConfig(): Argument #2 ($value) must be of type string, null given, called in /var/www/html/lib/private/AppFramework/Http/Dispatcher.php on line 225 in file '/var/www/html/custom_apps/calendar/lib/Controller/SettingsController.php' line 71","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:108.0) Gecko/20100101 Firefox/108.0","version":"25.0.2.3","exception":{"Exception":"Exception","Message":"OCA\\Calendar\\Controller\\SettingsController::setConfig(): Argument #2 ($value) must be of type string, null given, called in /var/www/html/lib/private/AppFramework/Http/Dispatcher.php on line 225 in file '/var/www/html/custom_apps/calendar/lib/Controller/SettingsController.php' line 71","Code":0,"Trace":[{"file":"/var/www/html/lib/private/AppFramework/App.php","line":172,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Calendar\\Controller\\SettingsController"},"setConfig"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":298,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Calendar\\Controller\\SettingsController","setConfig",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},["view","calendar.settings.setConfig"]]},{"file":"/var/www/html/lib/base.php","line":1047,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/calendar/v1/config/view"]},{"file":"/var/www/html/index.php","line":36,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","Line":165,"Previous":{"Exception":"TypeError","Message":"OCA\\Calendar\\Controller\\SettingsController::setConfig(): Argument #2 ($value) must be of type string, null given, called in /var/www/html/lib/private/AppFramework/Http/Dispatcher.php on line 225","Code":0,"Trace":[{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":225,"function":"setConfig","class":"OCA\\Calendar\\Controller\\SettingsController","type":"->","args":["view",null]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":133,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Calendar\\Controller\\SettingsController"},"setConfig"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":172,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Calendar\\Controller\\SettingsController"},"setConfig"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":298,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Calendar\\Controller\\SettingsController","setConfig",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},["view","calendar.settings.setConfig"]]},{"file":"/var/www/html/lib/base.php","line":1047,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/calendar/v1/config/view"]},{"file":"/var/www/html/index.php","line":36,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/custom_apps/calendar/lib/Controller/SettingsController.php","Line":71},"CustomMessage":"--"},"id":"63b01c028a013"}

Browser log

No response

Additional info

No response

[CapSel]

I have this issue on:

• freshly installed Nextcloud in Docker from tag fpm-alpine + postgres:latest with nginx outside of container on ubuntu
• old instance (as in fresh install was looong time ago) of Nextcloud unpacked (not from distro package or docker) on ArchLinux with Apache and php-fpm

[miaulalala]

Please make sure to look for existing issues frst!

Duplicate of #4844

[miaulalala]

Sorry, my mistake - this is valid.

[tcitworld]

From what I can found, setTimezone and setInitialView don't check that they have indeed a valid value before doing the call to set the value.

[miaulalala]

Issue is also solved by #4873 : Vue-router (:to="") should only be used for internal/frontend routes and not for external routes. The initialization of route params goes crazy because of this and finally causes the backend issues.

[st3iny]

BTW: This is indeed a regression from the sharing redesign (#4515). The export button used href before and I migrated it to param without thinking about the implications.