Tasks: Can not interact with all task lists anymore

[robingenz]

Steps to reproduce

1. Add a task list named "Persönlich"
2. Update to Nextcloud Tasks version 0.10.0

Expected behaviour

It should be possible to interact with the task list without any problems.

Actual behaviour

Since release v0.10.0 I can not interact with all task lists anymore. When I access my task list named "Persönlich", only a blank area (empty <div class="content-wrapper"></div>) is displayed (See screenshot).

The associated url is: https://server.tld/apps/tasks/#/calendars/pers%C3%B6nlich

Server configuration

Operating system: Ubuntu 18.04.2 LTS

Web server: Apache

Database: MySQL

PHP version: v7.2

Nextcloud version: v16.0.2

Tasks version: v0.11.0

Updated from an older Nextcloud or fresh install: older install

Signing status:

No errors have been found.

Client configuration

Browser: Firefox 67 and Chrome 75

Operating system: Windows 10 and Ubuntu 18 Desktop

[raimund-schluessler]

How did you create this task list? It shouldn't have any special characters in its url. When I create one with NC16.0.2 and Tasks 0.9.8, the url reads /nextcloud/index.php/apps/tasks/#/calendars/persnlich.

[robingenz]

The task list is about 3 years old. I created the list along with the calendar in the Calendar app. If I create a new task list with special characters in the current version, they are not part of the url either.

[raimund-schluessler]

Hm, I can reproduce this issue when I add a percent-encoded character into the URI, like %C3%B6. The problem is that this character will be decoded to ö and the calendar cannot be found by its ID anymore, because %C3%B6 != ö. Sadly, i don't know how to fix this yet.

[robingenz]

Thanks for your help.
I fixed it in sql by removing the ö from the uri attribute of the record.
Databse table: oc_calendars
Maybe it helps others.

[raimund-schluessler]

@robingenz I (partially) fixed the issue in #480. The only problem which remains is, that the initial navigation for such special URIs will not work. This means reloading the app will lead to a blank calendar view, but the calendar will appear as soon as you click the link in the left sidebar. This is likely due to https://github.com/vuejs/vue-router/issues/2725

I packed a version including the fix: tasks.zip. Could you please check whether the version in this zip file solves the problem? Please recreate your issue by putting the ö back into the uri, making sure the problem reoccurs with v0.11.0 and check whether the fixed version solves it.

[robingenz]

@raimund-schluessler I have tested it. Your fix solves my problem. But as you said, initial navigation does not work for such special URIs.

[raimund-schluessler]

I think fixing the initial nav needs to be done upstream. But #480 at least enables working on such calendars at all.