Warning: Trying to access array offset on value of type null in /opt/lampp/htdocs/repositorio/principal/detalle.php on line 35

Warning: Trying to access array offset on value of type null in /opt/lampp/htdocs/repositorio/principal/detalle.php on line 38

Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 4 in /opt/lampp/htdocs/repositorio/classes/cliente.class.php:189 Stack trace: #0 /opt/lampp/htdocs/repositorio/classes/cliente.class.php(189): mysqli_query(Object(mysqli), 'SELECT a.nombre...') #1 /opt/lampp/htdocs/repositorio/principal/detalle.php(38): Cliente->mostrarAutores(NULL, Object(mysqli)) #2 /opt/lampp/htdocs/repositorio/principal/index.php(485): include('/opt/lampp/htdo...') #3 {main} thrown in /opt/lampp/htdocs/repositorio/classes/cliente.class.php on line 189