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Or for longer, use three backticks above and below the code snippet:
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Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 29.0.5): 26.0.13
Operating system and version (eg, Ubuntu 29.04): RedHat 7.9
Apache or nginx version (eg, Apache 2.4.25): Nginx 1.25.5
PHP version (eg, 8.3): 8.2.18
The issue you are facing:
Hi,
I defined an Oauth client in the settings and configured it correctly.
This is the integration of Nextcloud with Zimbra (see doc. Zimbra Collaboration Administrator Guide)
In the Nextcloud logs, I clearly see the request for code (authorize) then for grant but at no time do I get a response with the token.
There is no POST /index.php/apps/oauth2/api/v1/token request sent.
However, in the MySQL database, I see a token that is created at each attempt.
MariaDB [nc]> select * from oc_oauth2_access_tokens;
±----±---------±----------±---------------------------------------------------------------------------------------------------------------------------------±-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------±----------------±------------+
| id | token_id | client_id | hashed_code | encrypted_token | code_created_at | token_count |
±----±---------±----------±---------------------------------------------------------------------------------------------------------------------------------±-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------±----------------±------------+
| 105 | 2155818 | 8 | 15ebd58c29e944b5972e0612a04965c22710ca29e879cdc86718cfca4c7d1a390f38be7fc3a866938b33906fda1e0156f011aa82bb3b1d26f6121dfe2a6effc5 | 7086cae6e2658b3f5619bbd4be3c2dcc0915bd416d1d6695baa369671547691787c66be2cfd8c989f60ab1a5527b9f3b2c85296bc5a0e9f40c5|b3ab3e972c24c96366dea6bc8876449a|66ccdbf557fd5bf2142d576e0b18d5ebdb9a8459aa77c3e86bbba2b35a6b70c28f50300ecfd4b367297|3 | 1718094865 | 0 |
| 106 | 2155903 | 8 | f00c7219f8060deac5687764418a577ee91c67537e09859c7db457abfc812f4846b3ea095c035c5d1f9d251eda9eec918269fba99ac8d1fd35db3f873334beda | 4acb9ef52b17f6a7069edc8bd1a96957e3295aed8be246fc2b11bf873d96a0fb024003c0522076f407f36a2384aa0137e880baa6583d7cbdf3f|ec7902e408da934ce6e747bf24746a74|b1d51de584af69fe3da98c40d743896102bcc984eff1147c1ae591dd1b06535ce0772c148821f5e8c3b|3 | 1718096011 | 0 |
±----±---------±----------±---------------------------------------------------------------------------------------------------------------------------------±--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Also, I don’t understand where the problem could come from.
Regards,
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
The output of your Nextcloud log in Admin > Logging:
PASTE HERE
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => 'xxx',
'passwordsalt' => 'xxx',
'secret' => 'xxx',
'trusted_domains' =>
array (
0 => 'cirrus.universite-paris-saclay.fr',
1 => 'nextcloud.swarm.di.u-psud.fr',
),
'datadirectory' => '/mnt/ncdata',
'dbtype' => 'mysql',
'version' => '26.0.13.1',
'overwrite.cli.url' => 'https://cirrus.universite-paris-saclay.fr',
'overwriteprotocol' => 'https',
'dbname' => 'nc',
'dbhost' => 'maxscale.dsi.universite-paris-saclay.fr',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'nc_write_prod',
'dbpassword' => 'xxx',
'dbdriveroptions' =>
array (
1002 => 'SET wait_timeout = 28800',
),
'installed' => true,
'maintenance' => false,
'apps_paths' =>
array (
0 =>
array (
'path' => '/var/www/html/apps',
'url' => '/apps',
'writable' => false,
),
1 =>
array (
'path' => '/var/www/html/custom_apps',
'url' => '/custom_apps',
'writable' => true,
),
),
'filelocking.enabled' => true,
'memcache.local' => '\\OC\\Memcache\\APCu',
'memcache.locking' => '\\OC\\Memcache\\Redis',
'memcache.distributed' => '\\OC\\Memcache\\Redis',
'redis' =>
array (
'host' => 'redis',
'port' => 6379,
),
'log_type' => 'file',
'logdateformat' => 'F d, Y H:i:s',
'loglevel' => 0,
'logfile' => '/var/log/nextcloud/nextcloud.log',
'logtimezone' => 'Europe/Paris',
'log.condition' =>
array (
'apps' =>
array (
0 => 'admin_audit',
),
),
'mail_from_address' => 'cirrus-noreply',
'mail_smtpmode' => 'smtp',
'mail_sendmailmode' => 'smtp',
'mail_domain' => 'universite-paris-saclay.fr',
'mail_smtphost' => 'smtp.universite-paris-saclay.fr',
'mail_smtpport' => '25',
'mail_smtpstreamoptions' =>
array (
'ssl' =>
array (
'allow_self_signed' => true,
'verify_peer' => false,
'verify_peer_name' => false,
),
),
'trusted_proxies' =>
array (
0 => '10.0.4.0/16',
1 => '172.20.8.0/24',
2 => '172.20.4.0/24',
3 => '10.0.1.0/24',
),
'forwarded_for_headers' =>
array (
0 => 'HTTP_X_FORWARDED_FOR',
1 => 'X-Forwarded-For',
2 => 'HTTP_X_FORWARDED',
3 => 'HTTP_FORWARDED_FOR',
),
'ldapIgnoreNamingRules' => false,
'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
'skeletondirectory' => '/mnt/ncdata/skeleton',
'twofactor_enforced' => 'false',
'twofactor_enforced_groups' =>
array (
),
'twofactor_enforced_excluded_groups' =>
array (
),
'htaccess.RewriteBase' => '/',
'theme' => '',
'filelocking.ttl' => 43200,
'knowledgebaseenabled' => false,
'default_language' => 'fr',
'default_locale' => 'fr_FR',
'trashbin_retention_obligation' => '30, 60',
'app_install_overwrite' =>
array (
0 => 'files_clipboard',
1 => 'dashboard',
2 => 'zimbrasoap',
3 => 'occweb',
4 => 'activitylog',
5 => 'emlviewer',
6 => 'files_lock',
),
'simpleSignUpLink.shown' => false,
'sharing.maxAutocompleteResults' => 10,
'sharing.minSearchStringLength' => 3,
'upgrade.disable-web' => true,
'default_phone_region' => 'FR',
'ldapUserCleanupInterval' => 32,
'sharing.enable_share_accept' => false,
'sharing.force_share_accept' => false,
'auth.bruteforce.protection.enabled' => false,
'csrf.disabled' => 'true',
'enable_previews' => true,
'enabledPreviewProviders' =>
array (
0 => 'OC\\Preview\\PNG',
1 => 'OC\\Preview\\JPEG',
2 => 'OC\\Preview\\GIF',
3 => 'OC\\Preview\\HEIC',
4 => 'OC\\Preview\\BMP',
5 => 'OC\\Preview\\XBitmap',
6 => 'OC\\Preview\\MP3',
7 => 'OC\\Preview\\TXT',
8 => 'OC\\Preview\\MarkDown',
9 => 'OC\\Preview\\Krita',
10 => 'OC\\Preview\\Movie',
11 => 'OC\\Preview\\PDF',
12 => 'OC\\Preview\\SVG',
),
'onlyoffice' =>
array (
'verify_peer_off' => true,
),
'updater.server.url' => 'https://updates.nextcloud.com/customers/PFDDT-Y4ADC-VXLG8-Q35E0-TBDVZ/',
'updatechecker' => true,
'has_internet_connection' => true,
'encryption.legacy_format_support' => false,
'encryption.key_storage_migrated' => false,
'allow_local_remote_servers' => true,
'http.cookie.samesite' => 'None',
);
The output of your Apache/nginx/system log in /var/log/____:
PASTE HERE
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
{"reqId":"Gv2iLf3Z1DH26Jm1kgTL","level":0,"time":"June 11, 2024 11:19:08","remoteAddr":"10.255.3.50","user":"denis.casanova","app":"zimbrasoap","method":"GET","url":"/index.php/apps/oauth2/authorize?client_id=xxx&redirect_uri=https%3A%2F%2Fhermes.universite-paris-saclay.fr%2Fservice%2Fextension%2Foauth2%2Fauthenticate%2Fnextcloud&response_type=code&state=%3Bnoop","message":"/appinfo/app.php is deprecated, use \\OCP\\AppFramework\\Bootstrap\\IBootstrap on the application class instead.","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0","version":"26.0.13.1","data":{"app":"zimbrasoap"}}
{"reqId":"Gv2iLf3Z1DH26Jm1kgTL","level":0,"time":"June 11, 2024 11:19:08","remoteAddr":"10.255.3.50","user":"denis.casanova","app":"user_ldap","method":"GET","url":"/index.php/apps/oauth2/authorize?client_id=xxx&redirect_uri=https%3A%2F%2Fhermes.universite-paris-saclay.fr%2Fservice%2Fextension%2Foauth2%2Fauthenticate%2Fnextcloud&response_type=code&state=%3Bnoop","message":"Calling LDAP function ldap_explode_dn with parameters [\"denis.casanova\",0]","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0","version":"26.0.13.1","data":{"app":"user_ldap"}}
{"reqId":"NQMyoYmPagPdiURKo590","level":0,"time":"June 11, 2024 11:19:11","remoteAddr":"10.255.3.82","user":"denis.casanova","app":"zimbrasoap","method":"GET","url":"/login/flow/grant?user=&direct=0&oauthState=&noop&stateToken=UYUfDp4fMu4ZizTcRGi6yAPJYdB8PITXRvGDV3H59OvZwc23UzL7DbnAwHJ0HRCy&clientIdentifier=xxx","message":"/appinfo/app.php is deprecated, use \\OCP\\AppFramework\\Bootstrap\\IBootstrap on the application class instead.","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0","version":"26.0.13.1","data":{"app":"zimbrasoap"}}
{"reqId":"NQMyoYmPagPdiURKo590","level":0,"time":"June 11, 2024 11:19:11","remoteAddr":"10.255.3.82","user":"denis.casanova","app":"user_saml","method":"GET","url":"/login/flow/grant?user=&direct=0&oauthState=&noop&stateToken=UYUfDp4fMu4ZizTcRGi6yAPJYdB8PITXRvGDV3H59OvZwc23UzL7DbnAwHJ0HRCy&clientIdentifier=xxx","message":"/appinfo/app.php is deprecated, use \\OCP\\AppFramework\\Bootstrap\\IBootstrap on the application class instead.","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0","version":"26.0.13.1","data":{"app":"user_saml"}}
{"reqId":"NQMyoYmPagPdiURKo590","level":0,"time":"June 11, 2024 11:19:11","remoteAddr":"10.255.3.82","user":"denis.casanova","app":"user_ldap","method":"GET","url":"/login/flow/grant?user=&direct=0&oauthState=&noop&stateToken=UYUfDp4fMu4ZizTcRGi6yAPJYdB8PITXRvGDV3H59OvZwc23UzL7DbnAwHJ0HRCy&clientIdentifier=xxx","message":"Calling LDAP function ldap_explode_dn with parameters [\"denis.casanova\",0]","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0","version":"26.0.13.1","data":{"app":"user_ldap"}}