Datenbankfehler

PDOException: SQLSTATE[HY000]: General error: 1267 Illegal mix of collations (latin1_german2_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '=' in /homepages/28/d34940110/htdocs/admin_solveta_net/includes/class-database.php:252 Stack trace: #0 /homepages/28/d34940110/htdocs/admin_solveta_net/includes/class-database.php(252): PDOStatement->execute() #1 /homepages/28/d34940110/htdocs/solveta_com/refer.php(35): clsDatabase->arrGetQuickCode() #2 {main}