Password not found

## What Happened
I have Caldav successfully setup in the online account plug, so when launching tasks I try to add a new task in my Caldav account, however I get the following pop up message that creating a new task failed and the details how Password not found

The terminal output there shows
`** (io.elementary.tasks:2): CRITICAL **: 10:56:48.089: MainWindow.vala:281: Password not found`

## Expected Behavior
Create a task using my caldav account as that is linked to Google

## Steps to Reproduce
Add a caldav account to the online accounts setting
launch tasks and try add a task using the Caldav account

### Logs
As already provided

## Platform Information
elementary OS 6 Early Access
Built on Ubuntu 20.04.1 LTS
Linux 5.8.0-63-generic