undefined index in Dashboard (no replies)

Hello,

i have a new Installation of Piwik-Version 2.12.0, PHP Version 5.6.5, mySQL-Version 5.5.

When i go to dashboard, i got an lot of warnings like this:

WARNING: D:\wwwroot\infosys\piwik\plugins\PrivacyManager\PrivacyManager.php(221): Notice - Undefined index: delete_reports_keep_month_reports
WARNING: D:\wwwroot\infosys\piwik\plugins\PrivacyManager\PrivacyManager.php(221): Notice - Undefined index: delete_reports_keep_week_reports
WARNING: D:\wwwroot\infosys\piwik\plugins\PrivacyManager\PrivacyManager.php(221): Notice - Undefined index: delete_reports_keep_year_reports
etc.

When i go to the menu Administration, Settings, Privacy, i got an error message like this, probably of the same reason like above:

Key "delete_logs_enable" for array with keys "delete_logs_enable, delete_logs_schedule_lowest_interval, delete_logs_older_than, delete_logs_max_rows_per_query, enable_auto_database_size_estimate, delete_reports_enable, delete_reports_older_than, delete_reports_keep_basic_metrics, delete_reports_keep_day_reports, delete_reports_keep_week_reports, delete_reports_keep_month_reports, delete_reports_keep_year_reports, delete_reports_keep_range_reports, delete_reports_keep_segment_reports" does not exist in "@PrivacyManager/privacySettings.twig" at line 111

What can i do to solve this problems ?

Greetings
Lars Vogelmann