[OJS 3.3.0.13] Error rebuilding the search index

Hi @rcgillis, @asmecher,

I have a eror rebuilding the search index through the command line. It shows me the following error and the process stops. The command used is php tools/rebuildSearchIndex.php, and error show me is:

Indexing "xxxxxxxx" ... PHP Fatal error:  Uncaught PDOException: SQLSTATE[22007]: Invalid datetime format: 1366 Incorrect string value: '\xF0\x9D\x91\x85\xF0\x9D...' for column `dbXXXXX`.`submission_search_keyword_list`.`keyword_text` at row 1 in /lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:115
Stack trace:
#0 /lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php(115): PDOStatement->execute()
#1 /lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(489): Doctrine\DBAL\Driver\PDOStatement->execute()
#2 /lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(664): Illuminate\Database\Connection->Illuminate\Database\{closure}()
#3 /lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php(631): Illuminate\Database\Connection->runQueryCallback()
# in /lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671

Hi @asmecher,

Is there anything you can recommend or something you can help me with to resolve this problem?