[horde] IMP is marked as authenticated, but no credentials can be found in the session.

[Nils]

Hi,

after upgrading to Ubuntu 22.04 I can't use IMP anymore. It says the 
User name at server.tld is not authorized for Mail. When I switch to mail, 
it asks for credentials again and after authenticating ist says "IMP is 
marked as authenticated, but no credentials can be found in the session."

Apache/2.4.58 (Ubuntu)
dovecot 2.3.16 (7e2e900c1a)
php7.4

horde is installed via PEAR and was just upgraded (another server with 
old installation method vie apt has the same problem).


No problems showing in horde self test

Mail Server Support Test
Attempting to login to the server: SUCCESS



Those are the details of the error:

A fatal error has occurred
IMP is marked as authenticated, but no credentials can be found in the 
session.
in /home/mail/pear/share/pear/Horde/Registry.php:1679

  1. Horde_Registry::appInit() /home/mail/httpdocs/site/imp/index.php:19
  2. Horde_Registry->pushApp() 
/home/mail/pear/share/pear/Horde/Registry.php:298
  3. Horde_Registry->_pushAppError() 
/home/mail/pear/share/pear/Horde/Registry.php:1622
  4. Horde_Registry::appInit() /home/mail/httpdocs/site/imp/index.php:19
  5. Horde_Registry->pushApp() 
/home/mail/pear/share/pear/Horde/Registry.php:298
  6. Horde_Registry->callAppMethod() 
/home/mail/pear/share/pear/Horde/Registry.php:1617
  7. Horde_Registry_Application->authenticated() 
/home/mail/pear/share/pear/Horde/Registry.php:1197
  8. IMP_Application->_authenticated() 
/home/mail/pear/share/pear/Horde/Registry/Application.php:108
  9. IMP_Auth::authenticateCallback() 
/home/mail/httpdocs/site/imp/lib/Application.php:134
10. IMP_Auth::_log() /home/mail/httpdocs/site/imp/lib/Auth.php:252
11. IMP_Imap->__call() /home/mail/httpdocs/site/imp/lib/Auth.php:141

Details
The full error message is logged in Horde's log file, and is shown below 
only to administrators. Non-administrative users will not see error details.

Horde_Exception_PushApp Object
(
     [application] => imp
     [details] =>
     [logged] => 1
     [_logLevel:protected] => 0
     [message:protected] => IMP is marked as authenticated, but no 
credentials can be found in the session.
     [string:Exception:private] =>
     [code:protected] => 5
     [file:protected] => /home/mail/pear/share/pear/Horde/Registry.php
     [line:protected] => 1679
     [trace:Exception:private] => Array
         (
             [0] => Array
                 (
                     [file] => /home/mail/pear/share/pear/Horde/Registry.php
                     [line] => 1622
                     [function] => _pushAppError
                     [class] => Horde_Registry
                     [type] => ->
                 )

             [1] => Array
                 (
                     [file] => /home/mail/pear/share/pear/Horde/Registry.php
                     [line] => 298
                     [function] => pushApp
                     [class] => Horde_Registry
                     [type] => ->
                 )

             [2] => Array
                 (
                     [file] => /home/mail/httpdocs/site/imp/index.php
                     [line] => 19
                     [function] => appInit
                     [class] => Horde_Registry
                     [type] => ::
                 )

         )

     [previous:Exception:private] => 
Horde_Exception_AuthenticationFailure Object
         (
             [application] =>
             [code:protected] => 6
             [details] =>
             [logged] => 1
             [_logLevel:protected] => 0
             [message:protected] => IMP is marked as authenticated, but 
no credentials can be found in the session.
             [string:Exception:private] =>
             [file:protected] => /home/mail/httpdocs/site/imp/lib/Imap.php
             [line:protected] => 628
             [trace:Exception:private] => Array
                 (
                     [0] => Array
                         (
                             [file] => 
/home/mail/httpdocs/site/imp/lib/Auth.php
                             [line] => 141
                             [function] => __call
                             [class] => IMP_Imap
                             [type] => ->
                         )

                     [1] => Array
                         (
                             [file] => 
/home/mail/httpdocs/site/imp/lib/Auth.php
                             [line] => 252
                             [function] => _log
                             [class] => IMP_Auth
                             [type] => ::
                         )

                     [2] => Array
                         (
                             [file] => 
/home/mail/httpdocs/site/imp/lib/Application.php
                             [line] => 134
                             [function] => authenticateCallback
                             [class] => IMP_Auth
                             [type] => ::
                         )

                     [3] => Array
                         (
                             [file] => 
/home/mail/pear/share/pear/Horde/Registry/Application.php
                             [line] => 108
                             [function] => _authenticated
                             [class] => IMP_Application
                             [type] => ->
                         )

                     [4] => Array
                         (
                             [file] => 
/home/mail/pear/share/pear/Horde/Registry.php
                             [line] => 1197
                             [function] => authenticated
                             [class] => Horde_Registry_Application
                             [type] => ->
                         )

                     [5] => Array
                         (
                             [file] => 
/home/mail/pear/share/pear/Horde/Registry.php
                             [line] => 1617
                             [function] => callAppMethod
                             [class] => Horde_Registry
                             [type] => ->
                         )

                     [6] => Array
                         (
                             [file] => 
/home/mail/pear/share/pear/Horde/Registry.php
                             [line] => 298
                             [function] => pushApp
                             [class] => Horde_Registry
                             [type] => ->
                         )

                     [7] => Array
                         (
                             [file] => 
/home/mail/httpdocs/site/imp/index.php
                             [line] => 19
                             [function] => appInit
                             [class] => Horde_Registry
                             [type] => ::
                         )

                 )

             [previous:Exception:private] =>
         )

)

Kind regards,
Nils