Enabling groupfolders app crashes the nextcloud

[SwikritiT]

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Steps to reproduce

1. Get the latest nextcloud server
2. Get the latest groupfolders app
3. enable the group folders app occ a:e groupfolders

Expected behaviour

The app gets enabled and the nextcloud server works fine

Actual behaviour

The cli says that the groupfolders app is enabled but upon visiting the nextcloud through browser the app crashes and logs shows something like this

{"reqId":"ZPcIqWkHXQoMwKYEoCgRVQAAAAY","level":3,"time":"2023-09-05T10:53:29+00:00","remoteAddr":"::1","user":"--","app":"PHP","method":"GET","url":"/nextcloud/master/","message":"Class OCA\\GroupFolders\\Helper\\LazyFolder contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (OCP\\Files\\FileInfo::getParentId) at /home/swikriti/www/nextcloud/master/apps/groupfolders/lib/Helper/LazyFolder.php#32","userAgent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36","version":"28.0.0.0","data":{"app":"PHP"}}

Server configuration

Operating system: Ubuntu 22.04.3 LTS

Web server: apache

Database: mysql

PHP version: 8.1.23

Nextcloud version: (see Nextcloud admin page) - 28.0.0 dev

Group folders version: 16.0.0-dev

Updated from an older Nextcloud/ownCloud or fresh install: fresh install

Where did you install Nextcloud from: github

Are you using external storage, if yes which one: none

Are you using encryption: no

Are you using an external user-backend, if yes which one: none

Client configuration

Browser:

Operating system:

Logs

Web server error log

Web server error log

Insert your webserver log here

Nextcloud log (data/nextcloud.log)

Nextcloud log

{"reqId":"ZPcIqWkHXQoMwKYEoCgRVQAAAAY","level":3,"time":"2023-09-05T10:53:29+00:00","remoteAddr":"::1","user":"--","app":"PHP","method":"GET","url":"/nextcloud/master/","message":"Class OCA\\GroupFolders\\Helper\\LazyFolder contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (OCP\\Files\\FileInfo::getParentId) at /home/swikriti/www/nextcloud/master/apps/groupfolders/lib/Helper/LazyFolder.php#32","userAgent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36","version":"28.0.0.0","data":{"app":"PHP"}}

Browser log

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

[SwikritiT]

I have made this PR which fixes the issue for me #2542, Please merge if it's relevant for this issue

[SwikritiT]

fixed by #2543