Fatal error: Uncaught PDOException: SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'language' in where clause is ambiguous in /home/jurujual/public_html/includes/database.php:61 Stack trace: #0 /home/jurujual/public_html/includes/database.php(61): PDO->prepare('\r\n SELECT\r\n ...') #1 /home/jurujual/public_html/includes/database.php(74): query('\r\n SELECT\r\n ...', Array) #2 /home/jurujual/public_html/courses.php(78): fetchAll('\r\n SELECT\r\n ...', Array) #3 {main} thrown in /home/jurujual/public_html/includes/database.php on line 61