Blocker, can not login as user after installing Matomo

after installing i got this error message:

Ein Fehler vom Typ E_ERROR wurde in der Zeile 407 der Datei /home/user/website/wp-content/plugins/matomo/classes/WpMatomo/Db/WordPress.php verursacht. Fehlermeldung: Uncaught Zend_Db_Statement_Exception: WP DB Error: [1062] Duplicate entry '' for key 'uniq_email' in /home/user/website/wp-content/plugins/matomo/classes/WpMatomo/Db/WordPress.php:407

any hints how to deal with that?

ups, googling that error could help :slight_smile:
i’ll try this first:

and will come back

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