Unknown character set utf8mb4

[Chas]

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You could try to replace these lines in /opt/librenms/config/database.php 'charset' => 'utf8mb4', 'collation' => 'utf8mb4_unicode_ci', with 'charset' => 'utf8', 'collation' => 'utf8_unicode_ci ', That being said, mine is default with utf8mb4 so i’m not sure whats different between our setups. Might be worth a try?