[Bug]: errors with webhook_listeners nextcloud 29 - 30

[Netmees]

⚠️ This issue respects the following points: ⚠️

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

Bug description

constant errors on log

Fatal   no app in context   
TypeError
json_decode(): Argument #1 ($json) must be of type string, bool given
Could not boot webhook_listeners: json_decode(): Argument #1 ($json) must be of type string, bool given

solution: disable app-> occ app:disable webhook_listeners

Steps to reproduce

1. php 8.1 - 8..2

Expected behavior

use 1.2.0 of the app

but still using 1.1.0-dev

Nextcloud Server version

30

Operating system

RHEL/CentOS

PHP engine version

PHP 8.2

Web server

Apache (supported)

Database engine version

MariaDB

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

Upgraded to a MAJOR version (ex. 28 to 29)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• [x] 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

[joshtrichards]

You're going to have to give us more to go on:

• Raw Nextcloud log entry (and possibly the one just before it) rather than just the excerpt
• Reproduction steps (how are you using the Webhook Listener?)

use 1.2.0 of the app

1.2.0 is for the upcoming v31 of Server. It's not relevant here.