**Describe the bug**
Updating Richdocuments took Nextcloud down
**To Reprodu…ce**
Steps to reproduce the behavior:
1. Update to v8.4.3
Manually disabled richdocuments to regain access, then removed the plugin and did an install and enable. Got a notification that this. app makes Nextcloud unstable and app can't thus be enabled.
**Expected behavior**
No impact on Nextcloud when updating richdocuments
**Screenshots**
N/A
**Client details:**
N/A
## Server details
**Operating system**:
Ubuntu server 20.04 LTS
**Web server:**
Apache2 2.4.59-1+ubuntu20.04.1
**Database:**
MySQL v10.3.39
**PHP version:**
v8.2.20
**Nextcloud version:**
v29.0.2
**Version of the richdocuments app**
v8.4.3
**Version of Collabora Online**
v24.4.201
**Configuration of the richdocuments app**
```
{
"apps": {
"richdocuments": {
"disable_certificate_verification": "yes",
"doc_format": "ooxml",
"enabled": "no",
"installed_version": "8.4.3",
"public_wopi_url": "https:\/\/team.bethanycc.uk",
"types": "prevent_group_restriction",
"wopi_allowlist": "192.168.0.0\/16",
"wopi_url": "https:\/\/team.bethanycc.uk\/apps\/richdocumentscode\/proxy.php?req="
}
}
}
```
<details>
<summary>Logs</summary>
#### Nextcloud log (data/nextcloud.log)
```
{"reqId":"XAiC5GQ0dNdGUnqDg8yE","level":4,"time":"2024-06-21T07:01:51+00:00","remoteAddr":"192.168.100.102","user":"bcc_nc_admin","app":"no app in context","method":"POST","url":"/settings/apps/disable","message":"Could not boot richdocuments: OCA\\Richdocuments\\Service\\CachedRequestService::get(): Return value must be of type ?string, array returned","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36","version":"29.0.2.2","exception":{"Exception":"TypeError","Message":"OCA\\Richdocuments\\Service\\CachedRequestService::get(): Return value must be of type ?string, array returned","Code":0,"Trace":[{"file":"/var/www/nextcloud/apps/richdocuments/lib/Service/CapabilitiesService.php","line":147,"function":"get","class":"OCA\\Richdocuments\\Service\\CachedRequestService","type":"->"},{"file":"/var/www/nextcloud/apps/richdocuments/lib/Service/CapabilitiesService.php","line":63,"function":"getParsedCapabilities","class":"OCA\\Richdocuments\\Service\\CapabilitiesService","type":"->"},{"file":"/var/www/nextcloud/apps/richdocuments/lib/AppInfo/Application.php","line":108,"function":"getCapabilities","class":"OCA\\Richdocuments\\Service\\CapabilitiesService","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Bootstrap/FunctionInjector.php","line":45,"function":"OCA\\Richdocuments\\AppInfo\\{closure}","class":"OCA\\Richdocuments\\AppInfo\\Application","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Bootstrap/BootContext.php","line":50,"function":"injectFn","class":"OC\\AppFramework\\Bootstrap\\FunctionInjector","type":"->"},{"file":"/var/www/nextcloud/apps/richdocuments/lib/AppInfo/Application.php","line":107,"function":"injectFn","class":"OC\\AppFramework\\Bootstrap\\BootContext","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php","line":200,"function":"boot","class":"OCA\\Richdocuments\\AppInfo\\Application","type":"->"},{"file":"/var/www/nextcloud/lib/private/App/AppManager.php","line":437,"function":"bootApp","class":"OC\\AppFramework\\Bootstrap\\Coordinator","type":"->"},{"file":"/var/www/nextcloud/lib/private/App/AppManager.php","line":216,"function":"loadApp","class":"OC\\App\\AppManager","type":"->"},{"file":"/var/www/nextcloud/lib/private/legacy/OC_App.php","line":128,"function":"loadApps","class":"OC\\App\\AppManager","type":"->"},{"file":"/var/www/nextcloud/lib/base.php","line":1030,"function":"loadApps","class":"OC_App","type":"::"},{"file":"/var/www/nextcloud/index.php","line":49,"function":"handleRequest","class":"OC","type":"::"}],"File":"/var/www/nextcloud/apps/richdocuments/lib/Service/CachedRequestService.php","Line":43,"message":"Could not boot richdocuments: OCA\\Richdocuments\\Service\\CachedRequestService::get(): Return value must be of type ?string, array returned","exception":{},"CustomMessage":"Could not boot richdocuments: OCA\\Richdocuments\\Service\\CachedRequestService::get(): Return value must be of type ?string, array returned"}}
{"reqId":"mBtFyPwBEUWh0QkqVgxB","level":4,"time":"2024-06-21T07:01:51+00:00","remoteAddr":"192.168.100.102","user":"bcc_nc_admin","app":"no app in context","method":"GET","url":"/ocs/v2.php/core/navigation/apps?format=json","message":"Could not boot richdocuments: OCA\\Richdocuments\\Service\\CachedRequestService::get(): Return value must be of type ?string, array returned","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36","version":"29.0.2.2","exception":{"Exception":"TypeError","Message":"OCA\\Richdocuments\\Service\\CachedRequestService::get(): Return value must be of type ?string, array returned","Code":0,"Trace":[{"file":"/var/www/nextcloud/apps/richdocuments/lib/Service/CapabilitiesService.php","line":147,"function":"get","class":"OCA\\Richdocuments\\Service\\CachedRequestService","type":"->"},{"file":"/var/www/nextcloud/apps/richdocuments/lib/Service/CapabilitiesService.php","line":63,"function":"getParsedCapabilities","class":"OCA\\Richdocuments\\Service\\CapabilitiesService","type":"->"},{"file":"/var/www/nextcloud/apps/richdocuments/lib/AppInfo/Application.php","line":108,"function":"getCapabilities","class":"OCA\\Richdocuments\\Service\\CapabilitiesService","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Bootstrap/FunctionInjector.php","line":45,"function":"OCA\\Richdocuments\\AppInfo\\{closure}","class":"OCA\\Richdocuments\\AppInfo\\Application","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Bootstrap/BootContext.php","line":50,"function":"injectFn","class":"OC\\AppFramework\\Bootstrap\\FunctionInjector","type":"->"},{"file":"/var/www/nextcloud/apps/richdocuments/lib/AppInfo/Application.php","line":107,"function":"injectFn","class":"OC\\AppFramework\\Bootstrap\\BootContext","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php","line":200,"function":"boot","class":"OCA\\Richdocuments\\AppInfo\\Application","type":"->"},{"file":"/var/www/nextcloud/lib/private/App/AppManager.php","line":437,"function":"bootApp","class":"OC\\AppFramework\\Bootstrap\\Coordinator","type":"->"},{"file":"/var/www/nextcloud/lib/private/App/AppManager.php","line":216,"function":"loadApp","class":"OC\\App\\AppManager","type":"->"},{"file":"/var/www/nextcloud/lib/private/legacy/OC_App.php","line":128,"function":"loadApps","class":"OC\\App\\AppManager","type":"->"},{"file":"/var/www/nextcloud/ocs/v1.php","line":60,"function":"loadApps","class":"OC_App","type":"::"},{"file":"/var/www/nextcloud/ocs/v2.php","line":23,"args":["/var/www/nextcloud/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/nextcloud/apps/richdocuments/lib/Service/CachedRequestService.php","Line":43,"message":"Could not boot richdocuments: OCA\\Richdocuments\\Service\\CachedRequestService::get(): Return value must be of type ?string, array returned","exception":{},"CustomMessage":"Could not boot richdocuments: OCA\\Richdocuments\\Service\\CachedRequestService::get(): Return value must be of type ?string, array returned"}}
```
#### Browser log
N/A
</details>