Nextcloud version: 19.0.1
Operating system and version: Ubuntu 18.04.4 LTS
Apache or nginx version: nginx/1.18.0
PHP version: 7.3
The issue you are facing: Do not see the app store within nextcloud’s settings; only “Your apps”, “Active apps”, “Disabled apps”, “App bundles”, “Featured apps” and “Developer documentation”.
Btw: The “Developer documentation” link does not work in 19.0.1 
Is this the first time you’ve seen this error?: Y
Steps to replicate it:
- wget https://download.nextcloud.com/server/releases/nextcloud-19.0.1.tar.bz2
- tar -xf nextcloud-19.0.1.tar.bz2
- do the default install procedure
- go to menu (click on the top right user icon) > Apps
- app store is not listed as well as errors in nextcloud.log
The output of your Nextcloud log in Admin > Logging:
GuzzleHttp\Exception\RequestException: cURL error 23: Unrecognized content encoding type. libcurl understands identity content encodings. (see https://curl.haxx.se/libcurl/c/libcurl-errors.html)
The output of your config.php file in /path/to/nextcloud:
<?php
$CONFIG = array (
'instanceid' => 'ocpu8o03ej5y',
'passwordsalt' => 'WHATaSalt',
'secret' => 'wellthisissecret',
'trusted_domains' =>
array (
0 => 'nextcloud.domain.tld',
),
'datadirectory' => '/www/nextcloud.domain.tld/data',
'dbtype' => 'mysql',
'version' => '19.0.1.1',
'overwrite.cli.url' => 'https://nextcloud.domain.tld',
'dbname' => 'cooldbname',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'coolusername',
'dbpassword' => 'secretpwd',
'installed' => true,
'mail_from_address' => 'mailuser',
'mail_smtpmode' => 'smtp',
'mail_sendmailmode' => 'smtp',
'mail_domain' => 'domain.tld',
'mail_smtphost' => 'localhost',
'mail_smtpport' => '25',
);
The output of your Apache/nginx/system log in /var/log/____:
There’s nothing in the nginx error.log and all good (200) in the nginx access.log.
But instead in the nextcloud.log:
(each apps call produces 4 log entries, like the following one)
{"reqId":"b5xo7DOfEWWbymPwsEqm","level":2,"time":"2020-07-21T12:28:26+00:00","remoteAddr":"123.123.123.123","user":"mycooladminuser","app":"appstoreFetcher","method":"GET","url":"/settings/apps","message":{"Exception":"GuzzleHttp\\Exception\\RequestException","Message":"cURL error 23: Unrecognized content encoding type. libcurl understands identity content encodings. (see https://curl.haxx.se/libcurl/c/libcurl-errors.html)","Code":200,"Trace":[{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","line":155,"function":"createRejection","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":[{"sink":{"__class__":"GuzzleHttp\\Psr7\\Stream"},"headers":["Date: Tue, 21 Jul 2020 12:28:26 GMT","Server: nginx/1.14.0 (Ubuntu)","Content-Type: application/json","Vary: Accept-Encoding,Accept-Language,Cookie","Allow: GET, HEAD, OPTIONS","ETag: W/\"2020-07-21 11:09:52.985039+00:00\"","Content-Language: en","X-Frame-Options: SAMEORIGIN","Content-Security-Policy: connect-src 'self'; img-src *; style-src 'self'; font-src 'self'; script-src 'self'; form-action 'self'; default-src 'none'","X-Content-Type-Options: nosniff","X-XSS-Protection: 1; mode=block","X-Cache-Status: HIT","X-Cache-Date: Tue, 21 Jul 2020 11:28:01 GMT","Content-Encoding: gzip","Transfer-Encoding: chunked"],"response":{"__class__":"GuzzleHttp\\Psr7\\Response"},"request":{"__class__":"GuzzleHttp\\Psr7\\Request"},"options":{"verify":"/www/nextcloud.domain.tld/data/files_external/rootcerts.crt","timeout":60,"synchronous":true,"handler":{"__class__":"GuzzleHttp\\HandlerStack"},"allow_redirects":{"max":5,"protocols":["http","https"],"strict":false,"referer":false,"track_redirects":false},"http_errors":true,"decode_content":true,"cookies":false,"idn_conversion":true},"errno":23,"onHeadersException":null,"__class__":"GuzzleHttp\\Handler\\EasyHandle"},{"errno":23,"error":"Unrecognized content encoding type. libcurl understands identity content encodings.","appconnect_time":0.136836,"url":"https://apps.nextcloud.com/api/v1/apps.json","content_type":"application/json","http_code":200,"header_size":621,"request_size":121,"filetime":-1,"ssl_verify_result":0,"redirect_count":0,"total_time":0.146867,"namelookup_time":0.106982,"connect_time":0.115678,"pretransfer_time":0.136849,"size_upload":0,"size_download":0,"speed_download":0,"speed_upload":0,"download_content_length":-1,"upload_content_length":-1,"starttransfer_time":0.146753,"redirect_time":0,"redirect_url":"","primary_ip":"176.9.217.53","certinfo":[],"primary_port":443,"local_ip":"46.163.92.2","local_port":53092,"http_version":2,"protocol":2,"ssl_verifyresult":0,"scheme":"HTTPS","curl_version":"7.64.1"}]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","line":105,"function":"finishError","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":[{"__class__":"GuzzleHttp\\Handler\\CurlHandler"},{"sink":{"__class__":"GuzzleHttp\\Psr7\\Stream"},"headers":["Date: Tue, 21 Jul 2020 12:28:26 GMT","Server: nginx/1.14.0 (Ubuntu)","Content-Type: application/json","Vary: Accept-Encoding,Accept-Language,Cookie","Allow: GET, HEAD, OPTIONS","ETag: W/\"2020-07-21 11:09:52.985039+00:00\"","Content-Language: en","X-Frame-Options: SAMEORIGIN","Content-Security-Policy: connect-src 'self'; img-src *; style-src 'self'; font-src 'self'; script-src 'self'; form-action 'self'; default-src 'none'","X-Content-Type-Options: nosniff","X-XSS-Protection: 1; mode=block","X-Cache-Status: HIT","X-Cache-Date: Tue, 21 Jul 2020 11:28:01 GMT","Content-Encoding: gzip","Transfer-Encoding: chunked"],"response":{"__class__":"GuzzleHttp\\Psr7\\Response"},"request":{"__class__":"GuzzleHttp\\Psr7\\Request"},"options":{"verify":"/www/nextcloud.domain.tld/data/files_external/rootcerts.crt","timeout":60,"synchronous":true,"handler":{"__class__":"GuzzleHttp\\HandlerStack"},"allow_redirects":{"max":5,"protocols":["http","https"],"strict":false,"referer":false,"track_redirects":false},"http_errors":true,"decode_content":true,"cookies":false,"idn_conversion":true},"errno":23,"onHeadersException":null,"__class__":"GuzzleHttp\\Handler\\EasyHandle"},{"__class__":"GuzzleHttp\\Handler\\CurlFactory"}]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/CurlHandler.php","line":43,"function":"finish","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":[{"__class__":"GuzzleHttp\\Handler\\CurlHandler"},{"sink":{"__class__":"GuzzleHttp\\Psr7\\Stream"},"headers":["Date: Tue, 21 Jul 2020 12:28:26 GMT","Server: nginx/1.14.0 (Ubuntu)","Content-Type: application/json","Vary: Accept-Encoding,Accept-Language,Cookie","Allow: GET, HEAD, OPTIONS","ETag: W/\"2020-07-21 11:09:52.985039+00:00\"","Content-Language: en","X-Frame-Options: SAMEORIGIN","Content-Security-Policy: connect-src 'self'; img-src *; style-src 'self'; font-src 'self'; script-src 'self'; form-action 'self'; default-src 'none'","X-Content-Type-Options: nosniff","X-XSS-Protection: 1; mode=block","X-Cache-Status: HIT","X-Cache-Date: Tue, 21 Jul 2020 11:28:01 GMT","Content-Encoding: gzip","Transfer-Encoding: chunked"],"response":{"__class__":"GuzzleHttp\\Psr7\\Response"},"request":{"__class__":"GuzzleHttp\\Psr7\\Request"},"options":{"verify":"/www/nextcloud.domain.tld/data/files_external/rootcerts.crt","timeout":60,"synchronous":true,"handler":{"__class__":"GuzzleHttp\\HandlerStack"},"allow_redirects":{"max":5,"protocols":["http","https"],"strict":false,"referer":false,"track_redirects":false},"http_errors":true,"decode_content":true,"cookies":false,"idn_conversion":true},"errno":23,"onHeadersException":null,"__class__":"GuzzleHttp\\Handler\\EasyHandle"},{"__class__":"GuzzleHttp\\Handler\\CurlFactory"}]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/Proxy.php","line":28,"function":"__invoke","class":"GuzzleHttp\\Handler\\CurlHandler","type":"->","args":["*** sensitive parameter replaced ***","*** sensitive parameter replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/Proxy.php","line":51,"function":"GuzzleHttp\\Handler\\{closure}","class":"GuzzleHttp\\Handler\\Proxy","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php","line":37,"function":"GuzzleHttp\\Handler\\{closure}","class":"GuzzleHttp\\Handler\\Proxy","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":29,"function":"__invoke","class":"GuzzleHttp\\PrepareBodyMiddleware","type":"->","args":["*** sensitive parameter replaced ***","*** sensitive parameter replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/RedirectMiddleware.php","line":70,"function":"GuzzleHttp\\{closure}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":59,"function":"__invoke","class":"GuzzleHttp\\RedirectMiddleware","type":"->","args":["*** sensitive parameter replaced ***","*** sensitive parameter replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/HandlerStack.php","line":71,"function":"GuzzleHttp\\{closure}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php","line":361,"function":"__invoke","class":"GuzzleHttp\\HandlerStack","type":"->","args":["*** sensitive parameter replaced ***","*** sensitive parameter replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php","line":163,"function":"transfer","class":"GuzzleHttp\\Client","type":"->","args":["*** sensitive parameter replaced ***","*** sensitive parameter replaced ***"]},{"file":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php","line":183,"function":"requestAsync","class":"GuzzleHttp\\Client","type":"->","args":["get",{"__class__":"GuzzleHttp\\Psr7\\Uri"},{"verify":"/www/nextcloud.domain.tld/data/files_external/rootcerts.crt","timeout":60,"synchronous":true,"handler":{"__class__":"GuzzleHttp\\HandlerStack"},"allow_redirects":{"max":5,"protocols":["http","https"],"strict":false,"referer":false,"track_redirects":false},"http_errors":true,"decode_content":true,"cookies":false,"idn_conversion":true,"_conditional":{"User-Agent":"GuzzleHttp/6.5.1 curl/7.64.1 PHP/7.3.20-1+ubuntu18.04.1+deb.sury.org+1"}}]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/Http/Client/Client.php","line":228,"function":"request","class":"GuzzleHttp\\Client","type":"->","args":["get","https://apps.nextcloud.com/api/v1/apps.json",{"verify":"/www/nextcloud.domain.tld/data/files_external/rootcerts.crt","timeout":60,"headers":{"Accept-Encoding":"gzip","User-Agent":"Nextcloud Server Crawler"},"synchronous":true}]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/App/AppStore/Fetcher/Fetcher.php","line":109,"function":"get","class":"OC\\Http\\Client\\Client","type":"->","args":["https://apps.nextcloud.com/api/v1/apps.json",{"timeout":60,"headers":{"Accept-Encoding":"gzip"}}]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/App/AppStore/Fetcher/AppFetcher.php","line":86,"function":"fetch","class":"OC\\App\\AppStore\\Fetcher\\Fetcher","type":"->","args":["",""]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/App/AppStore/Fetcher/Fetcher.php","line":173,"function":"fetch","class":"OC\\App\\AppStore\\Fetcher\\AppFetcher","type":"->","args":["",""]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/Installer.php","line":408,"function":"get","class":"OC\\App\\AppStore\\Fetcher\\Fetcher","type":"->","args":[]},{"file":"/www/nextcloud.domain.tld/nextcloud/apps/settings/lib/Controller/AppSettingsController.php","line":153,"function":"isUpdateAvailable","class":"OC\\Installer","type":"->","args":["updatenotification"]},{"file":"/www/nextcloud.domain.tld/nextcloud/apps/settings/lib/Controller/AppSettingsController.php","line":136,"function":"getAppsWithUpdates","class":"OCA\\Settings\\Controller\\AppSettingsController","type":"->","args":[]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":170,"function":"viewApps","class":"OCA\\Settings\\Controller\\AppSettingsController","type":"->","args":[]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":100,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Settings\\Controller\\AppSettingsController"},"viewApps"]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/AppFramework/App.php","line":137,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Settings\\Controller\\AppSettingsController"},"viewApps"]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php","line":47,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Settings\\Controller\\AppSettingsController","viewApps",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"category":"","id":"","_route":"settings.AppSettings.viewApps"}]},{"function":"__invoke","class":"OC\\AppFramework\\Routing\\RouteActionHandler","type":"->","args":[{"category":"","id":"","_route":"settings.AppSettings.viewApps"}]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/private/Route/Router.php","line":297,"function":"call_user_func","args":[{"__class__":"OC\\AppFramework\\Routing\\RouteActionHandler"},{"category":"","id":"","_route":"settings.AppSettings.viewApps"}]},{"file":"/www/nextcloud.domain.tld/nextcloud/lib/base.php","line":1007,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/settings/apps"]},{"file":"/www/nextcloud.domain.tld/nextcloud/index.php","line":37,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/www/nextcloud.domain.tld/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","Line":201,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0","version":"19.0.1.1"}
We’ve got 2 installations of nextcloud on this server (18.0.7 + 19.0.1), both do have the same problem.
The server is able to cURL https://apps.nextcloud.com/api/v1/categories.json both via command line as well as via PHP.
So there’s no firewall or cURL problem - maybe a php-curl issue?
(Works great on my local dev machine…)
I don’t know what’s wrong… 
Any idea?
Thanks in advance! 
