[Bug]: Sharing to Deck card successful, but still shows an error

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

Following error shows up:

But deck share still shows up (successful):

Steps to reproduce

1. Share a file with a Deck card
2. Observe

Expected behavior

No error

Nextcloud Server version

30

Operating system

None

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response

Start by reproducing the issue in Nextcloud Server 30: share a file with a Deck card and compare the displayed error with the successfully created card. Trace the sharing flow from the UI entry point and identify why the error is shown after success; done means the card is created without displaying an error.