UserId.getUsers generates warnings: Warning - Illegal offset type and Notice - Undefined index: label #15441
Description
seen on demo, all websites dashboard, repeated around 5-7 times:
WARNING: /home/piwik-demo/storage/www/demo.piwik.org/plugins/CoreVisualizations/Visualizations/HtmlTable.php(228): Notice - Undefined index: label - Matomo 3.13.1 - Please report this message in the Matomo forums: https://forum.matomo.org (please do a search first as it might have been reported already) (Module: UserId, Action: getUsers, In CLI mode: false)
WARNING: /home/piwik-demo/storage/www/demo.piwik.org/core/DataTable/Row.php(188): Warning - Illegal offset type - Matomo 3.13.1 - Please report this message in the Matomo forums: https://forum.matomo.org (please do a search first as it might have been reported already) (Module: UserId, Action: getUsers, In CLI mode: false)