Error "Your repo passphrase was stored in a password manager which is no longer available" after updating to 0.7.3

[mauromol]

Describe the bug
Today I updated Vorta Backup to 0.7.3 (from 0.7.2). Now my backup jobs fail with the error:
"Your repo passphrase was stored in a password manager which is no longer available".

To Reproduce
Steps to reproduce the behavior:

1. open Vorta
2. click on "Start backup"

Or just wait for a scheduled backup to start and see that it won't create any new archive in "Archives" list.

Environment (please complete the following information):

• OS: Kubuntu 20.04
• Vorta version: 0.7.3
• Installed from: Vorta PPA

Additional context

Logs:

2021-02-19 19:00:00,001 - apscheduler.executors.default - INFO - Running job "VortaScheduler.create_backup (trigger: cron[hour='*/1', minute='0'], next run at: 2021-02-19 20:00:00 CET)" (scheduled at 2021-02-19 19:00:00+01:00)
2021-02-19 19:00:00,006 - vorta.scheduler - INFO - Starting background backup for Home su NAS OpenMediaVault
2021-02-19 19:00:00,009 - vorta.notifications - DEBUG - success notifications suppressed
2021-02-19 19:00:00,010 - vorta.borg.borg_thread - DEBUG - Using VortaKWallet5Keyring keyring to store passwords.
2021-02-19 19:00:00,066 - vorta.borg.borg_thread - DEBUG - Password not found in primary keyring. Falling back to VortaDBKeyring.
2021-02-19 19:00:00,066 - vorta.scheduler - ERROR - Conditions for backup not met. Aborting.
2021-02-19 19:00:00,067 - vorta.scheduler - ERROR - Your repo passphrase was stored in a password manager which is no longer available.
Try unlinking and re-adding your repo.
2021-02-19 19:00:00,067 - vorta.notifications - DEBUG - notification not suppressed
2021-02-19 19:00:00,120 - apscheduler.executors.default - INFO - Job "VortaScheduler.create_backup (trigger: cron[hour='*/1', minute='0'], next run at: 2021-02-19 20:00:00 CET)" executed successfully

[mauromol]

Please note that in KWallet I do have vorta-repo among the list of connected applications:

[ajvalenc]

Same error with the 0.7.3 update (Manjaro KDE). I tried unlinking and re-adding the repo but didn't work. I got "ERROR: Connection closed by remote host. Is Borg working on the server?"