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Warning: include_once(): Failed opening 'controlador/seccionesControlador.php' for inclusion (include_path='.:/opt/lampp/lib/php') in /opt/lampp/htdocs/vista/servicioPreventivo-view.php on line 3

Fatal error: Class 'seccionesControlador' not found in /opt/lampp/htdocs/vista/servicioPreventivo-view.php on line 4