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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
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, 12.0.2): 18.0.4.2
Operating system and version (eg, Ubuntu 17.04): ubuntu 16.04
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.18
PHP version (eg, 7.1): php 7.4-fpm
The issue you are facing:
When under Settings -> Maintenance -> Support -> Generate System Rapport
It will create a new ${date}.md file and share it. When it creates a random password without a special character it will fail to share the file.
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
- Keep Generating rapports till your system creates a random password without special charcters
The output of your Nextcloud log in Admin > Logging:
Warning support Exception: Het wachtwoord moet minimaal één speciaal teken bevatten.
/var/www/nextcloud/lib/private/Share20/Manager.php - line 752:
OC\Share20\Manager->verifyPassword()
/var/www/nextcloud/apps/support/lib/Controller/ApiController.php - line 152:
OC\Share20\Manager->createShare()
/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php - line 170:
OCA\Support\Controller\ApiController->generateSystemReport()
/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php - line 99:
OC\AppFramework\Http\Dispatcher->executeController()
/var/www/nextcloud/lib/private/AppFramework/App.php - line 125:
OC\AppFramework\Http\Dispatcher->dispatch()
/var/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php - line 47:
OC\AppFramework\App::main()
<<closure>>
OC\AppFramework\Routing\RouteActionHandler->__invoke()
/var/www/nextcloud/lib/private/Route/Router.php - line 299:
call_user_func()
/var/www/nextcloud/lib/base.php - line 1008:
OC\Route\Router->match()
/var/www/nextcloud/index.php - line 38:
OC::handleRequest()
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
{
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"cloud.vstans.nl",
"office.vstans.nl"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"overwrite.cli.url": "https:\/\/cloud.vstans.nl",
"dbtype": "mysql",
"version": "18.0.4.2",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbtableprefix": "oc_",
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"memcache.local": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"logtimezone": "Europe\/Amsterdam",
"has_internet_connection": true,
"check_for_working_webdav": true,
"installed": true,
"loglevel": 1,
"maintenance": false,
"log_rotate_size": 1485760,
"mail_smtpmode": "sendmail",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"app.mail.imaplog.enabled": "true",
"mail_smtpauthtype": "LOGIN",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "587",
"enabledPreviewProviders": [
"OC\\Preview\\PNG",
"OC\\Preview\\JPEG",
"OC\\Preview\\GIF",
"OC\\Preview\\BMP",
"OC\\Preview\\XBitmap",
"OC\\Preview\\TXT",
"OC\\Preview\\MarkDown",
"OC\\Preview\\NFO"
],
"updater.release.channel": "stable",
"theme": "",
"trashbin_retention_obligation": "auto, 365",
"mail_smtpsecure": "tls",
"mail_smtpauth": 1,
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"mysql.utf8mb4": true,
"app_install_overwrite": [
"admin_notifications",
"printer"
],
"updater.secret": "***REMOVED SENSITIVE VALUE***"
}
The output of your Apache/nginx/system log in /var/log/____:
PASTE HERE
I don’t know how the password is generated and if I can control it.