Error:
An error occurred during the request. Unable to proceed.
Failed to enable ExApp
What I was trying to do:
I was trying to install To Gif Example in app API, for external apps. I also tried to install Context Chat Backend and I got the same error
Console log:
Error app_api Failed to enable ExApp to_gif_example. Error: cURL error 6: Could not resolve host: to_gif_example (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for 2024-04-02T15:40:12+00:00
http://to_gif_example:23000/enabled?enabled=1
Error app_api GuzzleHttp\Exception\ConnectException: cURL error 6: Could not resolve host: to_gif_example (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for 2024-04-02T15:40:12+00:00
http://to_gif_example:23000/enabled?enabled=1 at .../guzzlehttp/guzzle/src/Handler/CurlFactory.php line 210
0. 3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php line 158
GuzzleHttp\Handler\CurlFactory::createRejection("*** sensitive parameters replaced ***")
1. 3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php line 110
GuzzleHttp\Handler\CurlFactory::finishError(
)
2. 3rdparty/guzzlehttp/guzzle/src/Handler/CurlHandler.php line 47
GuzzleHttp\Handler\CurlFactory::finish(
)
3. 3rdparty/guzzlehttp/guzzle/src/Middleware.php line 137
GuzzleHttp\Handler\CurlHandler->__invoke(
)
4. lib/private/Http/Client/DnsPinMiddleware.php line 121
GuzzleHttp\Middleware::GuzzleHttp\{closure}("*** sensitive parameters replaced ***")
5. 3rdparty/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php line 35
OC\Http\Client\DnsPinMiddleware->OC\Http\Client\{closure}("*** sensitive parameters replaced ***")
6. 3rdparty/guzzlehttp/guzzle/src/Middleware.php line 31
GuzzleHttp\PrepareBodyMiddleware->__invoke(
)
7. 3rdparty/guzzlehttp/guzzle/src/RedirectMiddleware.php line 71
GuzzleHttp\Middleware::GuzzleHttp\{closure}("*** sensitive parameters replaced ***")
8. 3rdparty/guzzlehttp/guzzle/src/Middleware.php line 63
GuzzleHttp\RedirectMiddleware->__invoke(
)
9. 3rdparty/guzzlehttp/guzzle/src/HandlerStack.php line 75
GuzzleHttp\Middleware::GuzzleHttp\{closure}("*** sensitive parameters replaced ***")
10. 3rdparty/guzzlehttp/guzzle/src/Client.php line 331
GuzzleHttp\HandlerStack->__invoke(
)
11. 3rdparty/guzzlehttp/guzzle/src/Client.php line 168
GuzzleHttp\Client->transfer(
)
12. 3rdparty/guzzlehttp/guzzle/src/Client.php line 187
GuzzleHttp\Client->requestAsync("*** sensitive parameters replaced ***")
13. lib/private/Http/Client/Client.php line 337
GuzzleHttp\Client->request(
)
14. apps/app_api/lib/Service/AppAPIService.php line 130
OC\Http\Client\Client->put(
)
15. apps/app_api/lib/Service/AppAPIService.php line 517
OCA\AppAPI\Service\AppAPIService->requestToExApp(
)
16. apps/app_api/lib/Controller/ExAppsPageController.php line 426
OCA\AppAPI\Service\AppAPIService->enableExApp(
)
17. lib/private/AppFramework/Http/Dispatcher.php line 230
OCA\AppAPI\Controller\ExAppsPageController->enableApp(
)
18. lib/private/AppFramework/Http/Dispatcher.php line 137
OC\AppFramework\Http\Dispatcher->executeController(
)
19. lib/private/AppFramework/App.php line 184
OC\AppFramework\Http\Dispatcher->dispatch(
)
20. lib/private/Route/Router.php line 315
OC\AppFramework\App::main(
)
21. lib/base.php line 1069
OC\Route\Router->match(
)
22. index.php line 39
OC::handleRequest(
)
Warning app_api Failed heartbeat on http://to_gif_example:23000 for 250 times. Most recent status=0, error: cURL error 6: Could not resolve host: to_gif_example (see 2024-04-02T15:40:18+00:00
https://curl.haxx.se/libcurl/c/libcurl-errors.html) for http://to_gif_example:23000/heartbeat
Prior issues:
I struggled to successfully register a daemon that would work, but found a solution, can be seen at Default Deploy Daemon is not accessible. Please verify its configuration - 
Support - Nextcloud community.
Docker containers:
I can see the docker containers were created, but they can’t be enabled
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e25bc5ce549e ghcr.io/cloud-py-api/to_gif_example:1.2.0 "python3 main.py" 6 minutes ago Up 6 minutes nc_app_to_gif_example
16087c4306b9 ghcr.io/cloud-py-api/nextcloud-appapi-dsp:release "/bin/bash start.sh" 2 hours ago Up About an hour (unhealthy) nextcloud-appapi-dsp
What I have tried:
I have tried registering and enabling the aforementioned apps by doing the following
sudo -u www-data php /var/www/nextcloud/occ app_api:app:register context_chat_backend
sudo -u www-data php /var/www/nextcloud/occ app_api:app:enablecontext_chat_backend
But once I enable it, it says Failed to enable ExApp context_chat_backend.
My Daemon configuration can be found the previously mentioned forum post, found at Default Deploy Daemon is not accessible. Please verify its configuration - Support - Nextcloud community.
Thank you