Error opening MAPI session after changing password

[jdoxey]

Updating a user's password seems to work fine, but requests in the same browser session after the update come back empty.

I'm running kopano-core version 8.7.0-3 and kopano-webapp (apache2) version 3.5.2 on Debian 10 Buster (installed from the default Debian sources).

I see the following errors in the apache logs,

[Thu Mar 18 07:34:49.796836 2021] [php7:notice] [pid 10484] [client 1.2.3.4:42892] MAPIException: MAPI error  in /usr/share/kopano-webapp/server/includes/core/class.mapisession.php:579
Stack trace:
#0 /usr/share/kopano-webapp/server/includes/core/class.mapisession.php(579): mapi_openmsgstore(Resource id #3, '\\x00\\x00\\x00...')
#1 /usr/share/kopano-webapp/server/includes/core/class.mapisession.php(481): MAPISession->openMessageStore('\\x00\\x00\\x00...', 'Default store')
#2 /usr/share/kopano-webapp/server/includes/core/class.properties.php(67): MAPISession->getDefaultMessageStore()
#3 /usr/share/kopano-webapp/server/includes/core/class.properties.php(837): Properties->Init()
#4 /usr/share/kopano-webapp/server/includes/core/class.properties.php(953): Properties->getMailProperties()
#5 /usr/share/kopano-webapp/server/includes/modules/class.maillistmodule.php(14): Properties->getMailListProperties()
#6 /usr/share/kopano-webapp/server/includes/core/class.dispatcher.php(38): MailListModule->__construct('maillistmodule1...', Array)
#7 /usr/share/kopano-webapp/server/includes/core/class.jsonrequest.php(50): Dispatcher->loadModule('maillistmodule', 'maillistmodule1...', Array)
#8 /usr/share/kopano-webapp/kopano.php(145): JSONRequest->execute('{"zarafa":{"mai...')
#9 {main}, referer: ...

Logging in with a brand new browser session works fine.

Any ideas?