uncaught exception: Missing parameters 'formula' or 'mml'.

in file: /dades/html/campus/filter/wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php line 180
#0 /dades/html/campus/filter/wiris/integration/showimage.php(34): com_wiris_plugin_impl_RenderImpl->showImage()
#1 {main}