Warning: Undefined array key "oeuvre_id" in /home/httpd/vhosts/artgallery.ch/httpdocs/oeuvre_artiste.php on line 10

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 1 in /home/httpd/vhosts/artgallery.ch/httpdocs/includes/class_oeuvres.php:75
Stack trace:
#0 /home/httpd/vhosts/artgallery.ch/httpdocs/includes/class_oeuvres.php(75): mysqli->query('SELECT * FROM O...')
#1 /home/httpd/vhosts/artgallery.ch/httpdocs/oeuvre_artiste.php(10): oeuvres->set_oeuvre_id(NULL)
#2 {main}
  thrown in /home/httpd/vhosts/artgallery.ch/httpdocs/includes/class_oeuvres.php on line 75