Fatal error: Uncaught Error: Call to undefined method Composer\Autoload\ClassLoader::setClassMapAuthoritative() in /home/customer/www/zakboekdietetiek.nl/public_html/wp-content/plugins/tablepress/libraries/composer/autoload_real.php:34 Stack trace: #0 /home/customer/www/zakboekdietetiek.nl/public_html/wp-content/plugins/tablepress/libraries/autoload.php(25): ComposerAutoloaderInit52642f55db3d786d0497624deacbe17e::getLoader() #1 /home/customer/www/zakboekdietetiek.nl/public_html/wp-content/plugins/tablepress/classes/class-tablepress.php(203): require_once('/home/customer/...') #2 /home/customer/www/zakboekdietetiek.nl/public_html/wp-content/plugins/tablepress/classes/class-evaluate-phpspreadsheet.php(31): TablePress::load_file('autoload.php', 'libraries') #3 /home/customer/www/zakboekdietetiek.nl/public_html/wp-content/plugins/tablepress/classes/class-tablepress.php(231): TablePress_Evaluate_PHPSpreadsheet->__construct(NULL) #4 /home/customer/www/zakboekdietetiek.nl/public_html/wp-content/plugins/tablepress/classes/class-e in /home/customer/www/zakboekdietetiek.nl/public_html/wp-content/plugins/tablepress/libraries/composer/autoload_real.php on line 34