# Internal server error after Next cloud update to 29.0.7

**URL:** https://dietpi.com/forum/t/internal-server-error-after-next-cloud-update-to-29-0-7/21440
**Category:** Troubleshooting
**Created:** [14 September 2024 08:35 UTC](https://dietpi.com/forum/t/internal-server-error-after-next-cloud-update-to-29-0-7/21440 "2024-09-14T08:35:33Z")
**Posts on this page:** 5
**Page:** 1

<div class="post-metadata">

### Author: ![Totila](https://dietpi.com/forum/letter_avatar_proxy/v4/letter/t/cc9497/32.png) [@Totila](https://dietpi.com/forum/u/Totila)
#### Post date: [14 September 2024 08:35 UTC](https://dietpi.com/forum/t/internal-server-error-after-next-cloud-update-to-29-0-7/21440/1 "2024-09-14T08:35:33Z")

</div>

### Creating a bug report/issue

I have searched the existing open and closed issues

#### Required Information

- DietPi version | G\_DIETPI\_VERSION\_CORE=9  
G\_DIETPI\_VERSION\_SUB=7  
G\_DIETPI\_VERSION\_RC=1  
G\_GITBRANCH=‘master’  
G\_GITOWNER=‘MichaIng’
- Distro version | bookworm
- Kernel version | Linux DietPi 6.1.0-9-amd64 #1 SMP PREEMPT\_DYNAMIC Debian 6.1.27-1 (2023-05-08) x86\_64 GNU/Linux
- Architecture | amd64
- SBC model | Native PC (x86\_64)

#### Additional Information (if applicable)

- Software title | Nextcloud
- Was the software title installed freshly or updated/migrated? Updated

#### Steps to reproduce

1. updated nextcloud instance via sudo -u www-data php /var/www/nextcloud/updater/updater.phar
2. ran through without errors

#### Expected behaviour

Nextcloud can be accessed as before

#### Actual behaviour

Nextxloud throws internal server error upon accessing instance via browser

#### Extra details

Nextcloud server log

```auto
root@DietPi:~# cat /mnt/dietpi_userdata/nextcloud_data/nextcloud.log
{"reqId":"LVShsmhdbALvUtvGGMdK","level":3,"time":"2024-09-14T08:09:32+00:00","remoteAddr":"2a02:2455:29f:e00:6550:ccbb:57c8:9f5b","user":"--","app":"index","method":"GET","url":"/","message":"Class \"OCA\\Files_pdfviewer\\Controller\\DisplayController\" does not exist","userAgent":"Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Mobile Safari/537.36","version":"29.0.7.1","exception":
{"Exception":"ReflectionException","Message":"Class \"OCA\\Files_pdfviewer\\Controller\\DisplayController\" does not exist","Code":-1,"Trace":[
{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":479,"function":"__construct","class":"ReflectionClass","type":"->"},
{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":439,"function":"getAttributeRoutes","class":"OC\\Route\\Router","type":"->"},
{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":149,"function":"loadAttributeRoutes","class":"OC\\Route\\Router","type":"->"},
{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":289,"function":"loadRoutes","class":"OC\\Route\\Router","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":323,"function":"findMatchingRoute","class":"OC\\Route\\Router","type":"->"},
{"file":"/var/www/nextcloud/lib/base.php","line":1058,"function":"match","class":"OC\\Route\\Router","type":"->"},
{"file":"/var/www/nextcloud/index.php","line":49,"function":"handleRequest","class":"OC","type":"::"}],
"File":"/var/www/nextcloud/lib/private/Route/Router.php","Line":479,"message":"Class \"OCA\\Files_pdfviewer\\Controller\\DisplayController\" does not exist","exception":{},"CustomMessage":"Class \"OCA\\Files_pdfviewer\\Controller\\DisplayController\" does not exist"}}
root@DietPi:~#

```

Any idea what I can do here?

Many thanks in advance.

-T

---

<div class="post-metadata">

### Author: ![Totila](https://dietpi.com/forum/letter_avatar_proxy/v4/letter/t/cc9497/32.png) [@Totila](https://dietpi.com/forum/u/Totila)
#### Post date: [14 September 2024 12:25 UTC](https://dietpi.com/forum/t/internal-server-error-after-next-cloud-update-to-29-0-7/21440/2 "2024-09-14T12:25:47Z")

</div>

This can be closed. I reverted back to the previous version for now and this works again.

Thanks.

-T

---

<div class="post-metadata">

### Author: ![StephanStS](https://dietpi.com/forum/user_avatar/dietpi.com/stephansts/32/2522_2.png) [@StephanStS](https://dietpi.com/forum/u/StephanStS)
#### Post date: [14 September 2024 17:01 UTC](https://dietpi.com/forum/t/internal-server-error-after-next-cloud-update-to-29-0-7/21440/3 "2024-09-14T17:01:49Z")

</div>



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<div class="post-metadata">

### Author: ![StephanStS](https://dietpi.com/forum/user_avatar/dietpi.com/stephansts/32/2522_2.png) [@StephanStS](https://dietpi.com/forum/u/StephanStS)
#### Post date: [14 September 2024 17:02 UTC](https://dietpi.com/forum/t/internal-server-error-after-next-cloud-update-to-29-0-7/21440/4 "2024-09-14T17:02:13Z")

</div>



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<div class="post-metadata">

### Author: ![system](https://dietpi.com/forum/uploads/default/original/1X/7e1021de2213860bce185915ce2c1786e56490ec.png) [@system](https://dietpi.com/forum/u/system)
#### Post date: [13 December 2024 17:03 UTC](https://dietpi.com/forum/t/internal-server-error-after-next-cloud-update-to-29-0-7/21440/5 "2024-12-13T17:03:04Z")

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