Fatal Error with incorrect String Value

Hi Everyone

Can anyone help work out cause of this problem? I'm not sure whats changed in our instance recently but we are starting to see Fatal logs of Insert query for Leads module. Seems to be some kind of encoding issue but that's all I can figure out so far. Any help appreciated. 

Thanks

[Fri Jan 25 15:01:03.880674 2019] [proxy_fcgi:error] [pid 2279:tid 139670985893632] [client 207.189.99.204:59299] AH01071: Got error 'PHP message: PHP Fatal error: Uncaught Doctrine\\DBAL\\Driver\\Mysqli\\MysqliException: Incorrect string value: '\\xF0\\x9D\\x90\\xBB ...' for column 'first_name' at row 1 in /srv/sugarcrm/fakesite.name.com/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/Mysqli/MysqliStatement.php:172\nStack trace:\n#0 /srv/sugarcrm/fakesite.name.com/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(1006): Doctrine\\DBAL\\Driver\\Mysqli\\MysqliStatement->execute()\n#1 /srv/sugarcrm/fakesite.name.com/src/Dbal/Connection.php(76): Doctrine\\DBAL\\Connection->executeUpdate('INSERT INTO lea...', Array, Array)\n#2 /srv/sugarcrm/fakesite.name.com/vendor/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php(208): Sugarcrm\\Sugarcrm\\Dbal\\Connection->executeUpdate('INSERT INTO lea...', Array, Array)\n#3 /srv/sugarcrm/fakesite.name.com/include/database/DBManager.php(867): Doctrine\\DBAL\\Query\\QueryBuilder->execute()\n#4 /srv/sugarcrm/fakesite.name.com/include/database/DBManager.php(784): DBManager->insertParams('leads', Array, Array)\n#5 ...\n'