I have update from Joomla 3 to 4. I updated Joomla by first actualizing the Megafilter to the newest version and the peforming the update of Joomla. In a second attempt I uninstalled the Megafilter first, then performed the update of Joomla and reinstalled the newest version of the Megafilter. No matter in which way, when I want to edit a filter and save I receive the message "0 The image file does not exist.", When I want to re-index a filter I receice the same error.