Cannot declare class OCA\Talk\Migration\Version2000Date20170707093535

[NeutroGe]

Edit by @nickvergessen

✅ Solution

We were only able to solve this in Nextcloud Server 19 onwards. So the major update from Nextcloud 17 to 18 will always trigger this.

🚧 Workaround

Uninstall the app and install it again.

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Original Post by @NeutroGe

Steps to reproduce

1. Install a fresh nextcloud 18.0.0.10 (latest current version)
2. Try to install Talk app
3. Check errors in nextcloud logs

{"reqId":"Xia6aNr0WbUmo-qoephJHQAAANM","level":3,"time":"2020-01-21T08:46:34+00:00","remoteAddr":"xx.xx.85.194","user":"******","app":"PHP","method":"POST","url":"/settings/apps/enable","message":"Cannot declare class OCA\Talk\Migration\Version2000Date20170707093535, because the name is already in use at /var/www/html/nextcloud/apps/spreed/lib/Migration/Version2000Date20170707093535.php#31","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36","version":"18.0.0.10","id":"5e26ba7581626"}

Operating system: Centos 8

Web server: Apache

Database: Maria

PHP version: PHP 7.4.1 (cli)

Nextcloud Version: 18.0.0.10

Thanks for your help.

[nickvergessen]

do you have the spreed in multiple apps/ folders?

[NeutroGe]

[root@nextcloud nextcloud]# find /var/www/html -name "spreed"
/var/www/html/nextcloud/apps/spreed
[root@nextcloud nextcloud]#

If that's what you meant :)

[NeutroGe]

I've tried again today based on a user reply on nextcloud community forum and found out that it's not a blocking error.

When you install talk, even when there is no spreed folder in the app folder you still get that error, but after getting it you can still press the "activate" button and the app works.

[nickvergessen]

Thats even more weird, but okay thanks :)

[NeutroGe]

Thanks to you for looking into it :)

[rubenszolt]

Hi, On new NC18 I have the same problem, it needed to push 3 times the Download and Enable button to make something and then I refresh the page and it appear on Disabled apps category, and at finish it need enabled.

[AlfredSK]

Same issue here on a fresh NC 18 installation. There is already an apps/spreed folder but I never installed talk/spreed manually. Maybe it is part of the recommended apps that are installed when the option is set on first run. Ok. Whatever. Let's get rid of it...

sudo -u www-data ./occ app:remove spreed

Removal is successful and the folder apps/spreed has vanished. Let's install it again...

sudo -u www-data ./occ app:install spreed
...
PHP Fatal error: Cannot declare class OCA\Talk\Migration\Version2000Date20170707093535, because the name is already in use in /var/www/html/nextcloud/apps/spreed/lib/Migration/Version2000Date20170707093535.php on line 127

Computer says no. Also, the web interface still shows 'download and enable'.

And now comes the weird part. Hitting 'download and enable' in the web interface again finally enabled Talk. So, somehow it works but there is definitely something wrong.

[andrewdunndev]

Similar experience on a fresh NC18 install.

[nickvergessen]

Managed to reproduce now